# Polar Coordinates

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By changing to polar coordinates, evaluate SSR (x+y) dA where R is the disk of radius 4 centered at the origin.

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##### Solution Summary

A double integral is found using polar coordinates. The solution is concise.

##### Solution Preview

I = integration(over disk area)[(x+y)dA]

For disk of radius R = 4,

x = r*cos(T)

y = r*sin(T)

where, r is the distance of the point (x,y) from the origin and T is the angle of radial ...

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- BEng, Allahabad University, India
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