# use l'hospitals rule

#### pnfuller

i dont even know where to begin with this?

MHF Helper

#### HallsofIvy

MHF Helper
Since the problem says that f' (NOT f) is continuous, I think we can assume that f is differentiable!

pnfuller, since the problem says "use L'Hopitals rule", perhaps you could begin by doing that?

#### Plato

MHF Helper
Since the problem says that f' (NOT f) is continuous, I think we can assume that f is differentiable!
It does not show $$\displaystyle f'$$ on this computer.
It could be that the image is so dark.
I wish we could ban posting questions as images.

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#### pnfuller

well how do you take the derivative of the numerator with all the different variables?
Since the problem says that f' (NOT f) is continuous, I think we can assume that f is differentiable!

pnfuller, since the problem says "use L'Hopitals rule", perhaps you could begin by doing that?