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How do you use substitution to integrate #3x^2 cos(x^3+5) #?

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May 28, 2015

#int3x^2cos(x^3+5)dx=sin(x^3+5) +C#

#int3x^2cos(x^3+5)dx=| (t=x^3+5), (dt=3x^2dx)|= intcostdt=sint+C=sin(x^3+5)+C#

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