Question

What is the inverse of f(x)=x+9−−−−√ for x≥−9?

Answer 1

f⁻¹(x) = x - 9

Explanation:

Inverse function:

An inverse function reverses the operation done by a particular function.

f(x) = x + 9

y = x + 9

Replace y with x,

x = y + 9

Now, solve for y,

x - 9 = y

y = x - 9

f⁻¹(x) = x - 9