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What is the reciprocal in mathematics? What is the reciprocal in mathematics,
The product of two real numbers is 1, so these two numbers are reciprocal. For example, the following sets of numbers are reciprocal:

The numerator and denominator are also interchangeable: the reciprocal of 5/3 is 3/5.

3 and 1/3 5/3 and 3/5 -0.5 and -2.

In addition, the reciprocal of 1 and-1 is itself, because zero cannot be divisible, so zero has no reciprocal.

In addition, there is a saying that two numbers whose product is negative 1 are negative reciprocal.

Formally, the reciprocal of a fraction is exactly the reciprocal of its numerator denominator.

Essentially, the product of two reciprocal numbers is 1.