Section 9.7 Surfaces (Cylindrical & Spherical Coordinates)
Some of the links listed below are .pdf files. Others use DPGraph or Derive 5.
Problem #18 using DPGraph
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((rho = 2*cos(phi), z = 0))
Problem #26 using DPGraph
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(0 <= theta & theta <= pi/2 & r <= z & z <= 2)
Problem #27 using DPGraph
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(x >= 0 & 0 <= phi & phi <= pi/6 & rho <= sec(phi))