Nike function, also called symbolic function, is figuratively a function image of y = x+a/X.

Hyperbola,

Divided into two parts.

Let y = x and x=0 be the asymptote.

In the first quadrant, the shape is a selected shape.

Centrally symmetric figure ...

It monotonically increases from negative infinity to negative root number A, monotonically decreases from negative root number A to 0, monotonically decreases from 0 to root number A, and monotonically increases from root number A to positive infinity.