Question

Find the inverse function of f(x)=\sqrt{2 x+6}.
f^{-1}(x)=

Answer 1

Remember the rule for square root?
Actually, it's easier if you think of it as
(2x + 6)^1/2

Answer 2

you want to solve for x.

First square both sides\[\Large y = \sqrt {2x + 6} \]

Answer 3

Oh sorry, my mind was in derivatives :P

Answer 4

agent smith's got it right ;)