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Mathematics 22 Online
OpenStudy (anonymous):

what are they doing with the x? x(1-x^2)^4 u=1-x^2 du=-2x -1/2 du=dx

OpenStudy (anonymous):

-1/2 integral u^4 du

OpenStudy (anonymous):

you then do u^5/5 but i cant figure out where the extra x is going

OpenStudy (anonymous):

You made a typo.

OpenStudy (anonymous):

-1/2 du = x dx.

OpenStudy (anonymous):

ohh my god. i never understood how to find du when it came with an variable. no wonder. thanks!

OpenStudy (anonymous):

No problem :P .

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