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OpenStudy (aykayyy):
cylindrical shells problem set up question y= -x^2 + 6x - 8, y = 0; about the y-axis
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OpenStudy (aykayyy):
i got \[\int\limits_{2}^{4} 2\pi (x-2)(-x^2+6X-8)dx\] but with this set up i got the answer 8pi3 but the answer is 8pi
OpenStudy (aykayyy):
yes thats 6x lol
OpenStudy (aykayyy):
|dw:1371905399363:dw| this is what i thought
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