Recent content by jonathanm111

I believe that's how they wanted us to solve it haha. nice find

I got it you were right, polar coordinates were the way to go. this was a strange problem, professor said it wouldn't be on any tests anyways. Thank you.

The question goes like: find the SA of the portion S of the cone z^2 =x^2 +y^2 where z>=0 contained within the cylinder y^2+z^2<=49 this is my attempt using the formula for SA, I could switch to parametric eqns, but even then I'd have hard time setting up limits of integration.

last quick question: how did you know to substitute the y into the x-integral

alright i got it to work, its 1179/2. And you'd get a different answer so its path-dependent. so we could actually use this information for B

I do know how to take the dot product but if its a simple matter with y=6x^2 then I must be missing something here. do you take the derivative of y and put it in dy and then solve for x and do the same thing? and then the dot product?

the question: My attempt: The partial derivatives did not match so i simply tried to find f(x,y) I got the set of equations on the right but that's about it.