I successfully did a problem like this before but I am stuck on this one.
Here is the question:
Find the area of the surface obtained by rotating the curve from to about the -axis.
Any help would be greatly appreciated!
Thanks in advance!
Instead of x multiplying the square root, shouldn't it be (1+5x^2) multiplying the root?
Edit: you are right but why? I thought You only put y like that and that if the variables are x you have to put the whole equation in.