Question 45524
f(x) = sqrt(2x-1)
y=sqrt(2x-1)
Interchange x and y to get:
x=sqrt(2y-1)
Solve for y, as follows:
x^2=2y-1
y=(x^2+1)/2
y=(1/2)x^2 + (1/2) for x>=0
This is the inverse.

Cheers,
Stan H.