anonymous
  • anonymous
Evaluate: integral (pi/4)S(pi/2) (-e^cotx)/(sinx)^2 dx The answer is 1-e but idk how
Mathematics
chestercat
  • chestercat
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anonymous
  • anonymous
if you are lucky this is a u-sub and you can make \[u=\cot(x)\]
anonymous
  • anonymous
yeah that is it, since \[du=-\csc^2(x)dx\] you have just what you want and you can integrate \[\int e^udu\]
anonymous
  • anonymous
okay thank you!

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