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Mathematics 8 Online
OpenStudy (anonymous):

HELP!!!!!! PLEASE!!!!!!!! Find the volume of the solid obtained by rotating the region bounded by the curves y=x^2, y=3x and for x greater than or equal to 0 about the x axis.

OpenStudy (sirm3d):

|dw:1358286724202:dw| use the disc method

OpenStudy (anonymous):

okay so would you do the integral from 0 to three of pi(3x^2-x^4)dx?

OpenStudy (sirm3d):

\[\pi \int\limits_0^3(9x^2-x^4)\mathrm dx\]

OpenStudy (anonymous):

Thanks I see what I did wrong now!

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