Question

Given the function f(x) = 2x, find the value of f−1(16).

f−1(16) = 4

f−1(16) = 8

f−1(16) = 32

f−1(16) = 65,536

Answer 1

Is that suppose to be an inverse?

Answer 2

To find the inverse:

Replace f(x) with y
Switch x's and y's, so put x where y is and x where y is.
Solve for y
Replace y with f^-1(x)

Answer 3

Yes @iambatman

Answer 4

Once you find inverse just plug 16 into x.

Answer 5

Wouldn't the inverse be x/2=y @iambatman

Answer 6

yup

Answer 7

now what's 16/2? :P

Answer 8

8 @iambatman

Answer 9

Right on!

Answer 10

you think you can help me some other problems! @iambatman

Answer 11

I can try >.<

Answer 12

Here is the next one!

Answer 13

I will try that once I get back, I have to go right now, so if someone hasn't answered your question by the time I'm back, I'll help you, good luck and bye :)

Answer 14

Ok thanks! @iambatman