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hmmm if you complete the square on the inverse, I do get an inverse function

Can you demonstrate that?

one sec

x^2-x2 is a parabola graph therefore passes vertical line test and has inverse?

2x*

hmmm

Agree...

Its inverse will be + sqrt(x)

notice the picture, the "red inverse" would not pass the vertical line test

thanks!

Why not ask your teacher?

1 quick question, does it matter if its f(x) = x^2-2x or f(y)= x^2-2x?

alright understood