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anonymous
 5 years ago
how do you integrate (x^9)(cos(x^5))?
anonymous
 5 years ago
how do you integrate (x^9)(cos(x^5))?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0\[intx ^{9}cosx ^{5}dx. \]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Possibly integration by parts

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i realize that, but should i don't know what values to assign for u and dv. should i substitute before i even use integration by parts?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0((x^10)/10)(sinx(x^5))

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What is that Nick, like the teacher says, show your work.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay Integrate (x^9)we get (x^9+1)/(9+1) intregrate cos(x^5) we get sin(x^5)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But there is a rule, the two x quantities are multiplied, so you can't integrate straight out, right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah, so you integrate by parts.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0substituting u for x^9 doesn't seem to work chaguanas ...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Check this I haven't done integration by parts in a while\[x ^{9}\cos x ^{5}45x ^{5}\sin x ^{5}\]

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.0http://www.wolframalpha.com/input/?i=integral+x^9*cos%28x^5%29+dx

watchmath
 5 years ago
Best ResponseYou've already chosen the best response.0wolframalpha will give you the steps as well.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0hold on are you sure that the integral of cos x^5 is is sin x^5  try differentiating sin x^5.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah, mine is wrong, see the wolfram watchmath put up. That was the u sub that ecollison was talking about, I missed that.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0watchmath thanks! the link was right

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0But please explain the u sub, they didn't account for the x^9 fully.
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