Algebra Introduction
Posted by
Ravi Kumar at Wednesday, November 18, 2009
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What is algebra?
Algebra is one of the branches of mathematics just as arithmetic, geometry, statistics. In algebra, letters are used to represent numbers. The letters which are used to represent numbers are called literal numbers or literals. Using of literals in place of numerals helps us to think in more general terms and obtain a rule.
Consider 5*6 = 6*5 , 2*3 = 3*2 , (1/2)*(3/4) = (3/4)*(1/2)
We can generalize the fact by the statement that the product of two rational numbers remains same in whichever order they are multiplied.
This can further be simplified by using symbols as, a*b = b*a , where a and b are any two rational numbers.