f(x)=-16x^2 What is the inverse function of.. I need the answer plzzzzzz, assume that all variables are positive

Question

f(x)=-16x^2  What is the inverse function of.. I need the answer plzzzzzz, assume that all variables are positive

anonymous · Answer

the inverse is 
$$f^{-1}(x)=\sqrt{-\frac{x}{16}}$$ typesetting is bad, square root should be over the whole thing.

anonymous · Answer

if it didn't say "assume that all variables are positive" this function would not be one to one so you would have to restrict the domain to make an inverse.

anonymous · Answer

are you worried about a "-" sign under the radical?

anonymous · Answer

there is no radical in the problem i have here

anonymous · Answer

i mean in the answer i sent.