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Mathematics 20 Online
OpenStudy (latifah):

what is the integral for |x|dx? what is the integral for |x|dx? @Mathematics

OpenStudy (stacey):

For this |x| needs to be written as a piecewise function, because |x|=x when x>=0, but |x|=-x when x<0. The integral of those are different, giving us a piecewise integral.

OpenStudy (latifah):

the integral from (-Pi) to (pi)

OpenStudy (stacey):

\[\int\limits_{-\pi}^{\pi}|x|dx=\int\limits_{-\pi}^{0}-xdx+\int\limits_{0}^{\pi}xdx\]

OpenStudy (latifah):

thank you so much

OpenStudy (stacey):

You're welcome. The answer should come out to be \[\pi^{2}\]

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