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OpenStudy (turingtest):
In example 5 in this set of notes, why does a negative appear in front of the integral in the last step? http://tutorial.math.lamar.edu/Classes/CalcII/TrigSubstitutions.aspx
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OpenStudy (anonymous):
because the derivative of cos is -sin
OpenStudy (anonymous):
they made a u-sub , u=cos(x)
OpenStudy (anonymous):
du=-sin(x)
OpenStudy (turingtest):
oh yeah... duh thanks!
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