Find f''(x) of 3csc(x).
a) −3csc(x)cot(x)
b) 3csc(x)cot2(x)+3csc3(x)
c) 3csc2(x)cot(x)+3csc3(x)
d) 3csc(x)cot2(x)+3csc2(x)cot(x)
e) Does not exist.

Question

Find f''(x) of 3csc(x).
a) −3csc(x)cot(x)
b) 3csc(x)cot2(x)+3csc3(x)
c) 3csc2(x)cot(x)+3csc3(x)
d) 3csc(x)cot2(x)+3csc2(x)cot(x)
e) Does not exist.

anonymous · Answer

guess you gotta take the derivative twice, no way around it

clara1223 · Answer

unfortunately

clara1223 · Answer

i know the trig derivatives, i just get confused with the -cscxcotx and then taking the derivative of that

anonymous · Answer

first time you get 
$$f'(x)=-3\csc(x)\cot(x)$$ now it is a product rule problem

clara1223 · Answer

oh, duh. didnt even think about the product rule. Ill see if i can do it now.

anonymous · Answer

lol it is not like you have a choice!

clara1223 · Answer

I know! I spaced...

clara1223 · Answer

btw i got b as my answer