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Lista 13 de Cálculo I 2010-2 24
UFES - Universidade Federal do Espı́rito Santo
DMAT - Departamento de Matemática
LISTA 13 - 2010-2
Regra de L’Hôpital
Calcule os limites dos exercı́cios 1. a 12.
1. lim
x→0
cos2x − 1
ex2
− 1
2. lim
x→1+
(ln x)x−1
3. lim
x→+∞
x2
− 1

e−x2
4. lim
x→+∞
ln (ln x)
ln x
5. lim
x→0+
ln( arcsen x)
cot x
6. lim
x→0
x
arctan x
7. lim
x→+∞
2
π arctan x
x
8. lim
x→+∞

cos
2
x
x2
9. lim
x→0+

tan
π
x + 2
x
10. lim
x→0

1
e (1 + x)
1
x
 1
x
11. lim
x→0

1 + ex
2
coth x
12. lim
x→0+

senh x
x
 1
x
Nos exercı́cios 13. e 14. encontre o valor de a que satisfaz a igualdade.
13. lim
x→+∞

1 + e2x
2
 a
x
=
√
e 14. lim
x→+∞

x + a
x − a
x
= 4
Nos exercı́cios 15. a 22. encontre, se existirem, as assı́ntotas horizontais e verticais do gráfico
da função.
15. f(x) =
x
ln x
16. f(x) =
e− 1
x2
x
17. f(x) = e
1
x
18. f(x) = x2 ln x
19. f(x) = e−x2
20. f(x) = xe−x
21. f(x) = x cosh x
22. f(x) = πx3
RESPOSTAS
1. −1
2. 1
3. 0
4. 0
5. 0
6. 1
7. e− 2
π
8. e−2
9. 1
10. e− 1
2
11. e
1
2
12. 1
13. 1
4
14. ln 2
15. Assı́ntota vertical: x = 1
16. Assı́ntota horizontal: y = 0
17. Assı́ntota vertical: x = 0
Assı́ntota horizontal: y = 0
18. Não tem assı́ntotas
19. Assı́ntota horizontal: y = 0
20. Assı́ntota horizontal: y = 0
21. Não tem assı́ntotas
22. Assı́ntota horizontal: y = 0

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Ex algebra (16)

  • 1. Lista 13 de Cálculo I 2010-2 24 UFES - Universidade Federal do Espı́rito Santo DMAT - Departamento de Matemática LISTA 13 - 2010-2 Regra de L’Hôpital Calcule os limites dos exercı́cios 1. a 12. 1. lim x→0 cos2x − 1 ex2 − 1 2. lim x→1+ (ln x)x−1 3. lim x→+∞ x2 − 1 e−x2 4. lim x→+∞ ln (ln x) ln x 5. lim x→0+ ln( arcsen x) cot x 6. lim x→0 x arctan x 7. lim x→+∞ 2 π arctan x x 8. lim x→+∞ cos 2 x x2 9. lim x→0+ tan π x + 2 x 10. lim x→0 1 e (1 + x) 1 x 1 x 11. lim x→0 1 + ex 2 coth x 12. lim x→0+ senh x x 1 x Nos exercı́cios 13. e 14. encontre o valor de a que satisfaz a igualdade. 13. lim x→+∞ 1 + e2x 2 a x = √ e 14. lim x→+∞ x + a x − a x = 4 Nos exercı́cios 15. a 22. encontre, se existirem, as assı́ntotas horizontais e verticais do gráfico da função. 15. f(x) = x ln x 16. f(x) = e− 1 x2 x 17. f(x) = e 1 x 18. f(x) = x2 ln x 19. f(x) = e−x2 20. f(x) = xe−x 21. f(x) = x cosh x 22. f(x) = πx3 RESPOSTAS 1. −1 2. 1 3. 0 4. 0 5. 0 6. 1 7. e− 2 π 8. e−2 9. 1 10. e− 1 2 11. e 1 2 12. 1 13. 1 4 14. ln 2 15. Assı́ntota vertical: x = 1 16. Assı́ntota horizontal: y = 0 17. Assı́ntota vertical: x = 0 Assı́ntota horizontal: y = 0 18. Não tem assı́ntotas 19. Assı́ntota horizontal: y = 0 20. Assı́ntota horizontal: y = 0 21. Não tem assı́ntotas 22. Assı́ntota horizontal: y = 0