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OpenStudy (anonymous):
integaration of cos(4x)
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OpenStudy (anonymous):
These kinds of problems I just do logically. What's the integral of cos(x)?
OpenStudy (anonymous):
sin(x)
OpenStudy (anonymous):
Yeah. When we do the chain rule on sin(4x), we get 4cos(4x). So we just have to multiply 1/4 by sin(4x) to get 1/4 * 4 cos(4x) = cos(4x). The integral is 1/4 * sin(4x)
OpenStudy (anonymous):
what about integral of sin(x).sqrt(x)dx
OpenStudy (anonymous):
do you know integration by parts?
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OpenStudy (anonymous):
yes uv-vdu
OpenStudy (tanya123):
Great
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