Reciprocal functions are difficult?

Reciprocal describes something that's the same on both sides. ... If you tell someone you like them and they say, "The feelings are reciprocal," that means they like you too. In math, a reciprocal is a number that when multiplied by a given number gives one as a product.

Can someone look up description and the definition of "to describe" reciprocals!?
Please sign-in to reply