2. Name: Abu Ja’far Muhammad Ibn Musa Al-
Khwarizmi
Nationality: Persian
Place of birth: Khawarizm
Date of birth: c.778
Date of Death: c.850
3. Al Khwarizmi was an Islamic mathematician, one of
the greatest minds of the early mathematics
productioners in Arabic. Some people say that he
was Persian. His family moved to Baghdad, where
he worked in House of Wisdom - a scientific
research and teaching center – and flourished while
working there under the supervision of Khalif Al-
Mamun who ordered him to collect and translate
Greek books in his library. Al Khwarizmi used the
books in that library in order to study other sciences,
such as Math, geography, history, and astronomy.
4. In Mathematics:
He developed the concept of algorithm in mathematics
The word “Algebra”, is derived from the title of his
greatest mathematical work Hisâb al-jabr wa-l-
Muqabala, which works out several hundred simple
quadratic equations by analysis as well as by
geometrical examples.
He confined his discussion to equations of 1st and 2nd
degrees.
In this book al-Khwarizmi defined algebra as an
independent disciple in mathematics
He accelerated the introduction of the Arabic numerals
together with the zero sign, to the west.
5. He wrote Kitâb al-Jem wa'l Tafrîq bi Hisâb al-Hindi. In
which he used Indian numerals including zero in place of
depicting numbers by the letters of the alphabet and the
decimal notations or numeration by position for the first
time.
The book deals with the four basic operations of addition,
subtraction, multiplication and division as well as
extraction of the square root.
Al-Khwārizmī's Zīj al-Sindhind also contained tables for
the trigonometric functions of sines and cosine.
He also invented the shadow square, an instrument used
to determine the linear height of an object, in conjunction
with the alidade for angular observations.
6. In Geography:
He supervised the work of 70 geographers to create the map of the
“known world”.
He systematized and corrected Ptolemy’s research in geography,
using his own original findings that are entitled as Surat al-Ard. The
text exists in a manuscript; the maps have unfortunately not been
preserved, although modern scholars have been able to reconstruct
them from al-Khwarizmi’s descriptions.
In Astronomy:
He wrote an important work on astronomy, covering calendars. Al-
Khwārizmī wrote several other works including a treatise on the
Hebrew Calendar (Risāla fi istikhrāj taʾrīkh al-yahūd).
He calculated the true position of the sun, moon, and planets.
In history:
He wrote a political history containing horoscopes of prominent
persons.
7. Shadow square, an instrument
invented by Al-Khwarizmi, it
determines the height of an
object, in conjunction with the
alidade, for angular observation.
Modern statue of Al-
Khwarizmi at Khiva,
Ouzbekistan
8. For instance we’re going to try to solve this: x²
+ 8x = 20
We construct a square of side x and area x²x²
x²
2x
2x
2x 2x
We divide 8x by 4, we obtain 2x, so we
construct four rectangles of area 2x and
length x to the sides of the squares.
9. According to the given equation :
The area of the whole 2nd figure is equal to 4 x 2x + x² = 8x
+ x² = 20
We mentioned that the area of the four constructed rectangles is
2x and the length of each one is x, which means that the width
of each one is 2. Now we construct four squares of side 2 and
area 4 each.
20
4
4
4
4
Now in order to determine the area of the 3rd
figure we add :
4 x 4 + 20 = 16 + 20 = 36
Then the side S of the 3rd figure is equal to 6
s
2
x
2
Note : the underlined numbers represent the length
of the side next to it.
S = 2 + X + 2
6 = 4 + X
X = 2
x²
2x
2x
2x
2x
10. Al-Khwarizmi found
a solution for such
algebraic equations
in his book.
Manuscript copy of Al-
Khwarizmi's book of
algebra.
12. Al-Khwarizmi lived in an Era that lacks the interest of
technology and progress. There was no advanced
technology that helps doing scientific researches. In
spite of that Al-Khwarizmi opened the doors of
knowledge and discovered mathematical principles that
are still being taught in nowadays schools. So, he is
considered as one of the greatest minds in history.
That’s why many countries attributes his nationality to it,
they also built many statues for him like Russia. Many
great scientists attributed the credit of their discoveries
to Al-Khwarizmi in their books. As Muslims we’re proud
of this person who raised our heads up and we wish
there is more people with such a mind.
13. We’re really proud of introducing Al-Khwarizmi to you, and we hope you get
benefit from this show, and you study hard to support science and improve our
world.
Also remember that the top 3 greatest minds in the world are:
1. Al-Khwarizmi
2. Newton
3. Mr. Hassan Sabra
+1 please
1st
place
