Mon 30 Sep, 2013 08:12 am
Compute the surface area generated by revolving the curve f(x)=2√x, 1<= x <=4, about the x axis. Need detailed solution!
Thank you, though I am aware of the technique. I am having trouble evaluating the integral sqrt(1 +1/x). I need to know how to evaluate this integral to solve surface area of rotation.
Read the formula at fresco's link again.
Your integrand seems to be missing a factor of 2π*y.
You seem to be misunderstanding the difficult part of the problem. The 2pi is not the problem. Constants get pulled out. I need help evaluating remaining integral. I need help with finding the appropriate integration technique for sqrt(1+(1/x))