Question

Find the inverse for f(x)= sqrt2x-6

Answer 1

f^-1(x) = (x^2 +6)/2

Explanation:

f(x) = y

y =
`√(2x-6)`

to get the inverse replace x with y

so x =
`√(2y-6)`

by squaring both sides

x^2 = 2y-6

y = (x^2 +6)/2