f(x)...

[DeltaBoy]

The problem statement, all variables and given/known data

http://i10.photobucket.com/albums/a138/CanlongII/Untitled.jpg

Can anyone tell what went wrong for the last part.. i'm confused =/

[cristo]

Well, what did you do? Can you show your working?

[rootX]

The problem statement, all variables and given/known data

http://i10.photobucket.com/albums/a138/CanlongII/Untitled.jpg

Can anyone tell what went wrong for the last part.. i'm confused =/

just a minor error, you didn't multiply correct.

[HallsofIvy]

I don't see how we can tell you "what went wrong if you don't show what you did!

I will say that you have the denominator correct but the numerator is wrong.