Question: An annulus is the region between two concentric circles. (1) Write out aparametric representation of an annulus with outer radius 2 and inner radius 1;

An annulus is the region between two concentric circles. (1) Write out aparametric representation of an annulus with outer radius 2 and inner radius 1; (2) Writeout the rectangle representation (in terms of x and y) of the annulus.

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