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OpenStudy (nubeer):
find the area of the surface generated by revolving r^2=cos2x about y axis. this question is related to polar coordinates.
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OpenStudy (mathmate):
|dw:1324838256977:dw| The function resembles two leaves defined between -pi/4 to pi/4, and from 3pi/4 to 5pi/4. Outside of these limits, r is not defined in real. Is this what you expect?
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