have to do a shell volume; can do it easy with disc but that's not the question asked. bounded by y=1/x^2; y=0; x=1; x=4.about the x axis.... I have gotten this:
$$v=2\pi \int\limits_{0}^{1 }(\sqrt{y}/y)(y-1) dy$$

Question

anonymous · Answer

answer with disc is 21/64 pi...which is correct..but I cannot get it with shell. Help please!

anonymous · Answer

OH..about x axis. sorry

amistre64 · Answer

shell is simple enough, so long as you remember how to find the area of a rectangle ...

amistre64 · Answer

y=1/x^2; y=0; x=1; x=4

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