Reciprocal of a Number
A number is called the reciprocal of another number if the product of the two numbers is 1. To find the reciprocal of a number, write the number as a proper or improper fraction and then interchange the numerator and denominator, retaining the negative sign, if any, in the numerator.
Example.1)
Find the reciprocal of 11
11 1
And.) Reciprocal of 11 = (= -------- ) = ---------
1 11
Example.2)
5
Find the reciprocal of 3 --------
7
Ans.)
5 26
reciprocal of 3 -------- = reciprocal of --------
7 7
26 7
= ( = --------- ) = -------- (Ans.)
7 26
Example.3)
3
Find the reciprocal of - 2 -------
5
Ans.) 3 13
reciprocal of - 2 ------- = reciprocal of - -------
5 5
13 5
= ( = - ------- ) = - -------- (Ans.)
5 13