formula for Area with Polar Coordinates integral |1/2r^2dQ can anyone prove this?

8 years agoı am using formula but dont get where it comes.how can I be satisfied in this way :(

8 years agoI think it's a simplified form of a triple integral but it might be derived another way not entirely sure

8 years agodouble integral i mean

8 years agothanks s.n I was trying to figure out.how comes with double intgral? isnt it an area bounded by a region.

8 years agoRelax. No double integral here. It's based on the formula for the area of a sector of a circle, which is proportional to the central angle theta. Find that formula first. To find a polar area, you use a series of "sectors" much like a series of Riemann rectangles. Shrink the sectors and take the limit of the sum. That enough of a hint?

8 years agothanks man.you re right.I am so "bimbo".

8 years ago