jaersyn
find the indefinite integral of (sinx)^3 * cos(x)



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mark_o.
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\[\int\limits_{}^{}u ^{3}du=?\]

mark_o.
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integral of (sinx)^3 * cos(x)dx
let u=sin x
du=cosx

mark_o.
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\[\int\limits_{}^{}u ^{3}du=\frac{ 1 }{ 4 } u ^{4}+C\]

mark_o.
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=\[\frac{ 1 }{ 4 }(\sin x)^{4}+C\]

jaersyn
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yeah, thnks i was being retarded