gaga1112
Rotate the region bounded by x=y^3 ,y=2 and the yaxis about the yaxis.



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vf321
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Step 1: Draw a picture
dw:1349024618698:dw

vf321
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Step 2: Disk method. Do you know it?

gaga1112
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how i do?

vf321
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Well wait is your question just to rotate or to calculate the volume of the thing that you get or what?

gaga1112
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get

gaga1112
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but i will draw gragh x^3 how

vf321
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no you should draw x = y^3, as I did.

gaga1112
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uhmm

gaga1112
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how i could draw x=y^3?

gaga1112
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do you have just trick?