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#1
in this question I've to find, in tearms of pi, the volume of the solid revolution formed.
I know how to solve the problem but how do I find the limits?
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4 weeks ago
#2
(Original post by Bananasplitxxx)
in this question I've to find, in tearms of pi, the volume of the solid revolution formed.
I know how to solve the problem but how do I find the limits?
Are you rotating about the x axis or the y axis?
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#3
(Original post by RDKGames)
Are you rotating about the x axis or the y axis?
I'm guessing the x axis as all the others were the x axis.
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4 weeks ago
#4
(Original post by Bananasplitxxx)
I'm guessing the x axis as all the others were the x axis.
So then you need limits for x.

The portion you are rotating clearly begins at x=0 hopefully this is obvious, and the next limit along is where this portion ends. Clearly it ends where the curve cuts the x axis.

So solve 4-x^2=0 for the upper limit.
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#5
has a number not photo copied or something?
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