anonymous
  • anonymous
help with my calculus hw
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
Sure.
nenadmatematika
  • nenadmatematika
post
anonymous
  • anonymous
\[\int\limits_{?}^{?}(\sin ^{2}x -\cos ^{2}x)/(sinx)\]

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anonymous
  • anonymous
u=sin(x)? Rewrite cos2(x) as 1-sin2(x) The "2" is a power, btw.
anonymous
  • anonymous
Yes, Stenly knows what he's saying.
anonymous
  • anonymous
i think a work out would be more helpful because im not understanding what you are saying
nenadmatematika
  • nenadmatematika
Stenly wtf? :D
anonymous
  • anonymous
@stenly i was calculus was that easy, lol
anonymous
  • anonymous
Actually, ignore me. Take the 1/sin(x) and turn it into csc(x). Expand it out.
anonymous
  • anonymous
Integrate by terms then.
anonymous
  • anonymous
i am still confused
anonymous
  • anonymous
what do you mean by expand it out
anonymous
  • anonymous
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.
anonymous
  • anonymous
Hmm, I don't know why cotxcosx can be rewritten as cscx-sinx... Wait...

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