onegirl
Evaluate the indicated integral.



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onegirl
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onegirl
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ok

Euler271
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let u = x^3; du = 3x^2 dx

onegirl
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what do i do next?

Euler271
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1/3 integral of cosu du

Euler271
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make the substitution literally. for u and du

Euler271
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x^2dx = du/3

onegirl
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ok

Euler271
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integral of cosu du= sinu

onegirl
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okay

onegirl
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so thats it?

Euler271
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then u replug in the subsitution.
final answer should be 1/3 (sin(x^3))

Euler271
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+ C

onegirl
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okay

onegirl
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okay