For each three-dimensional solid E, choose a coordinate system that would be easiest and simplest for computing the mass of the solid. Then set up the triple integral with limits for computing the mass, but do NOT evaluate the integrals. Assume that the density function is ρ(x, y, z) = 3z. (a) E is the solid bounded by the planes x + 2y + 3z = 12, x = 0, y = 0 and z = 0. (b) E is the solid bounded by the surfaces x^2 + y^2 + z^2 = 4 and z =sqrt(x^2 + y^2) (c) E is the solid bounded by the surfaces z = 3 − 2x^2 − 2y^2 and z =sqrt(x^2 + y^2)

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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For each three-dimensional solid E, choose a coordinate system that would be easiest and simplest for computing the mass of the solid. Then set up the triple integral with limits for computing the mass, but do NOT evaluate the integrals. Assume that the density function is ρ(x, y, z) = 3z.
(a) E is the solid bounded by the planes x + 2y + 3z = 12, x = 0, y = 0 and z = 0.
(b) E is the solid bounded by the surfaces x^2 + y^2 + z^2 = 4 and z =sqrt(x^2 + y^2)
(c) E is the solid bounded by the surfaces z = 3 − 2x^2 − 2y^2 and z =sqrt(x^2 + y^2)

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