you were given all the pieces, now plug them in where they should go
But one of the problems I am having with this particular question is that there isn't an f(x) function to work with. I had that exact setup on my paper, but I am wondering about how I would get f'.
But one of the problems I am having with this particular question is that there isn't an f(x) function to work with. I had that exact setup on my paper, but I am wondering about how I would get f'.
Thanks,
-qbkr21
$\displaystyle f(4) = 5 \implies f^{-1}(5) = 4$
we are also told that $\displaystyle f'(4) = f' \left( f^{-1}(5) \right) = \frac {2}{3}$
that's all the information we need for our formula, right?