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OpenStudy (anonymous):
Find the area of the surface obtained by rotating the curve y=1+ 1/2x^2 1<=x<=2 about the y axis. Any ideas?
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OpenStudy (irishboy123):
is that \[y=1+ \frac{1}{2} x^2 \]
OpenStudy (anonymous):
yes
OpenStudy (irishboy123):
|dw:1430355636517:dw| is this how you see it?
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