# Maths in the arab world introduction

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• ## Reduction of the equations to one of six standard forms (b,c >0) :

• squares equal roots (ax2 = bx)
• squares equal number (ax2 = c)
• roots equal number (bx = c)
• squares and roots equal number (ax2 + bx = c)
• squares and number equal roots (ax2 + c = bx)
• roots and number equal squares (bx + c = ax2)

• ## (Latin translation)

• numerical system
• India
• zero

• ## Different number systems were used simultaneously in the Arabic world over a long period of time. There were three different types of arithmetic (11th century):

• counting on the fingers with the numerals written entirely in words
• the sexagesimal system with numerals denoted by letters of the Arabic alphabet
• the arithmetic of the Indian numerals

• ## The Arabs start their study with the idea of the Greeks and the idea of Hindus.At the end, they prefer the idea of the Hindus.

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