The document is a lecture note from an NYU Calculus I class covering the definite integral. It provides announcements about upcoming quizzes and exams. The content discusses computing definite integrals using Riemann sums and the limit of Riemann sums, as well as properties of the definite integral. Examples are given of calculating Riemann sums using different representative points in each interval.

1. Section 5.2
The Definite Integral
V63.0121.006/016, Calculus I
New York University
April 15, 2010
Announcements
April 16: Quiz 4 on §§4.1–4.4
April 29: Movie Day!!
April 30: Quiz 5 on §§5.1–5.4
Monday, May 10, 12:00noon (not 10:00am as previously
announced) Final Exam
. . . . . .

2. Announcements
April 16: Quiz 4 on
§§4.1–4.4
April 29: Movie Day!!
April 30: Quiz 5 on
§§5.1–5.4
Monday, May 10,
12:00noon (not 10:00am
as previously announced)
Final Exam
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 2 / 28

3. Objectives
Compute the definite
integral using a limit of
Riemann sums
Estimate the definite
integral using a Riemann
sum (e.g., Midpoint Rule)
Reason with the definite
integral using its
elementary properties.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 3 / 28

4. Outline
Recall
The definite integral as a limit
Estimating the Definite Integral
Properties of the integral
Comparison Properties of the Integral
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 4 / 28

5. Cavalieri's method in general
Let f be a positive function defined on the interval [a, b]. We want to
find the area between x = a, x = b, y = 0, and y = f(x).
For each positive integer n, divide up the interval into n pieces. Then
b−a
∆x = . For each i between 1 and n, let xi be the ith step between
n
a and b. So
x0 = a
b−a
x1 = x0 + ∆x = a +
n
b−a
x2 = x1 + ∆x = a + 2 · ...
n
b−a
xi = a + i · ...
n
b−a
. . . . . x
. xn = a + n · =b
. 0 . 1 . . . . i . . .xn−1. n
x x x x n
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 5 / 28

6. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
left endpoints…
∑
n
Ln = f(xi−1 )∆x
i=1
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

7. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
right endpoints…
∑
n
Rn = f(xi )∆x
i=1
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

8. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
midpoints…
∑ ( xi−1 + xi )
n
Mn = f ∆x
2
i=1
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

9. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
the minimum value on the
interval…
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

10. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
the maximum value on the
interval…
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

11. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
…even random points!
. . . . . . . x
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

12. Forming Riemann sums
We have many choices of representative points to approximate the
area in each subinterval.
…even random points!
. . . . . . . . x
In general, choose ci to be a point in the ith interval [xi−1 , xi ]. Form the
Riemann sum
∑ n
Sn = f(c1 )∆x + f(c2 )∆x + · · · + f(cn )∆x = f(ci )∆x
i=1
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 6 / 28

13. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] .
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
matter what choice of ci we make. . x
.
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

14. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] .
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
matter what choice of ci we make. . x
.
.
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

15. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 1 = 3.0
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

16. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 2 = 5.25
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

17. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 3 = 6.0
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

18. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 4 = 6.375
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

19. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 5 = 6.59988
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

20. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 6 = 6.75
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

21. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 7 = 6.85692
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

22. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 8 = 6.9375
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

23. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 9 = 6.99985
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

24. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 10 = 7.04958
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

25. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 11 = 7.09064
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

26. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 12 = 7.125
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

27. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 13 = 7.15332
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

28. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 14 = 7.17819
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

29. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 15 = 7.19977
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

30. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 16 = 7.21875
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

31. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 17 = 7.23508
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

32. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 18 = 7.24927
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

33. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 19 = 7.26228
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

34. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 20 = 7.27443
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

35. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 21 = 7.28532
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

36. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 22 = 7.29448
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

37. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 23 = 7.30406
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

38. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 24 = 7.3125
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

39. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 25 = 7.31944
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

40. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 26 = 7.32559
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

41. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 27 = 7.33199
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

42. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 28 = 7.33798
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

43. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 29 = 7.34372
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

44. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 30 = 7.34882
L
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
l .
.eft endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

45. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 1 = 12.0
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

46. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 2 = 9.75
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

47. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 3 = 9.0
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

48. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 4 = 8.625
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

49. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 5 = 8.39969
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

50. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 6 = 8.25
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

51. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 7 = 8.14236
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

52. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 8 = 8.0625
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

53. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 9 = 7.99974
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

54. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 10 = 7.94933
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

55. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 11 = 7.90868
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

56. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 12 = 7.875
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

57. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 13 = 7.84541
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

58. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 14 = 7.8209
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

59. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 15 = 7.7997
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

60. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 16 = 7.78125
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

61. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 17 = 7.76443
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

62. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 18 = 7.74907
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

63. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 19 = 7.73572
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

64. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 20 = 7.7243
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

65. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 21 = 7.7138
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

66. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 22 = 7.70335
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

67. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 23 = 7.69531
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

68. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 24 = 7.6875
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

69. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 25 = 7.67934
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

70. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 26 = 7.6715
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

71. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 27 = 7.66508
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

72. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 28 = 7.6592
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

73. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 29 = 7.65388
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

74. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 30 = 7.64864
R
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
r .
. ight endpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

75. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 1 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

76. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 2 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

77. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 3 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

78. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 4 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

79. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 5 = 7.4998
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

80. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 6 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

81. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 7 = 7.4996
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

82. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 8 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

83. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 9 = 7.49977
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

84. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 10 = 7.49947
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

85. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 11 = 7.49966
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

86. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 12 = 7.5
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

87. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 13 = 7.49937
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

88. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 14 = 7.49954
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

89. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 15 = 7.49968
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28

90. Theorem of the (previous) Day
Theorem
If f is a continuous function on [a, b] . . 16 = 7.49988
M
or has finitely many jump
discontinuities, then
{ n }
∑
lim Sn = lim f(ci )∆x
n→∞ n→∞
i=1
exists and is the same value no
. x
.
matter what choice of ci we make.
m .
. idpoints
. . . . . .
V63.0121.006/016, Calculus I (NYU) Section 5.2 The Definite Integral April 15, 2010 7 / 28