Question

help with my calculus hw

Answer 1

Sure.

Answer 2

post

Answer 3

\[\int\limits_{?}^{?}(\sin ^{2}x -\cos ^{2}x)/(sinx)\]

Answer 4

u=sin(x)? Rewrite cos2(x) as 1-sin2(x)

The "2" is a power, btw.

Answer 5

Yes, Stenly knows what he's saying.

Answer 6

i think a work out would be more helpful because im not understanding what you are saying

Answer 7

Stenly wtf? :D

Answer 8

@stenly i was calculus was that easy, lol

Answer 9

Actually, ignore me. Take the 1/sin(x) and turn it into csc(x). Expand it out.

Answer 10

Integrate by terms then.

Answer 11

i am still confused

Answer 12

what do you mean by expand it out

Answer 13

Alright, so csc(x)(sin2(x)-cos2(x)). Can we agree with that? (The 2 is a power.)

This is the same as csc(x)sin2x-csc(x)(cos2(x)), which is the same as sinx-cotxcosx.

Answer 14

Hmm, I don't know why cotxcosx can be rewritten as cscx-sinx... Wait...