Question

If f(x) = 5√(2x), what is the value of f^-1(10)?

Answer 1

\[f(x) = 5\sqrt{2x}. ------- f ^{-1}(10). Hope that makes \it easier \to visualize.\]

Answer 2

you are trying to solve
\[5\sqrt{x}=10\] for x

Answer 3

oopx
\[5\sqrt{2x}=10\]
\[\sqrt{2x}=2\]
\[2x=4\]
\[x=2\]

Answer 4

so since
\[f(2)=10\] we know
\[f^{-1}(10)=2\]

Answer 5

So if \[f(x) = y\] then \[f ^{-1}(y) = x\]?

Answer 6

Nvm got it

Answer 7

x=2