The multiplicative inverse of a fraction a/b is b/a. For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

What is the formula of multiplicative?

An arithmetic function f(n) is said to be completely multiplicative (or totally multiplicative) if f(1) = 1 and f(ab) = f(a)f(b) holds for all positive integers a and b, even when they are not coprime.

What is multiplicative inverse and example?

The multiplicative inverse of a number x is given by x^-1, such that when it is multiplied by its original number, it results in value equal to 1. For example, the multiplicative inverse of 2 is 2^-1 as it satisfies the expression: 2 x 2^-1 = 2 x ½ = 1. It is also called as reciprocal of a number.