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0 votes
1 answer
282 views

Find the volume generated by rotating the region bounded by 3 lines about the x-axis using the method of cylindrical shells

I've been solving problems on cylindrical shells and this is the formula the textbook has given me: $V=\int_a^b 2\pi xf(x)\:dx$, where $x$ is the radius of the shell. I usually just figure out the ...
rayank97's user avatar
2 votes
1 answer
568 views

Sphere parameterization from the general parameterization of a surface of revolution

I'm trying to derive the parameterization of a sphere from the general parametric equations for a surface of revolution. In particular, I read on wikipedia, that in general, to parameterize a rotating ...
Luke__'s user avatar
  • 183
-1 votes
2 answers
64 views

Volume of a Solid of Revolution?

Fairly quick question, but I'm a bit confused on whether or not the work I did was in any way right. So the question went something like this: "Find the volume if the region enclosing $y=x^3, x=0,$ ...
joe's user avatar
  • 325
0 votes
1 answer
139 views

Finding an alternate generating curve

Using $r(x) = \frac{(1-2x)}{3}$ my first generating curve is $y^2 + z^2 = \left(\frac{1-2x}{3}\right)^2$ I'm stuck on finding another generating curve as $x^2$ cannot be isolated to make a ...
Prandals's user avatar
  • 135
2 votes
1 answer
2k views

Surface Area of Revolution around y=x

Consider the curve $x=-t^2$ , $y=\frac{t^3}{3}-t+1$ , $t\in[0,1]$. Find the surface area obtained by revolving the curve about the line $y=x$. On my textbook there are formulas to find the surface ...
arpf's user avatar
  • 169