Hi, I am working on an excersise about surface integration. Normally I would define my Surface like this: Surface(

Hi, I am solving a question about derives. I now what's the value of dx/dt, x and y. I was asked to calculate the value of dy/dt. This is my Maple worksheet:

I have these equations.

I have following expression.

Hi. I tried to solve some excersices but with this one I've got a little problem. I was asked to calculate the area of a circlesegment with radius R and midpointcorner 2*alpha. I have chosen the straigt side of the circlesegment to be parallel with the y axis.

I get these formulas in polarcoördinates.

oppp:=Doubleint(integrand(pool),r=R*cos(alpha)/cos(theta)..R,theta=-alpha..alpha);
alpha R
/ /
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oppp := | | | r | dr dtheta
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/ /