Calculus Problem:
Find the derivative of the function f(x) = 4 sin x / 4-4cos x

Question

Calculus Problem:
Find the derivative of the function f(x) = 4 sin x / 4-4cos x

zepdrix · Answer

Hmmm notice how everything has a 4? :O

anonymous · Answer

yes

zepdrix · Answer

$$\large 4-4cosx=4(1-1cosx)$$
If you factor out the 4 from the bottom like this, you might be able to see a nice cancellation before you differentiate :D

zepdrix · Answer

Then it looks likeeee.. quotient rule. Having trouble setting it up? :O

anonymous · Answer

i can set it up

zepdrix · Answer

Hmmm ok then what part are you getting stuck on? c:

anonymous · Answer

well i hadn't tried doing the stuff with the four's like what you just did
that might be the problem

zepdrix · Answer

$$\large [\frac{ sinx }{ 1-cosx }]'=\frac{ (sinx)'(1-cosx)-sinx(1-cosx)' }{ (1-cosx)^2 }$$

zepdrix · Answer

Hmm yah, a lot of 4's floating around :( that could be tricky.