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OpenStudy (anonymous):
find the area of the surface by revolving the curve y=x^3/9, 0<=x<=2
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OpenStudy (anonymous):
help :(
OpenStudy (nincompoop):
what seems to be the problem?
OpenStudy (nincompoop):
first, write down the formula for the surface area
OpenStudy (nincompoop):
write down y = then y' 1+y' sqrt(1+y') start evaluating
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