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Evaluate the following triple integral:


√ − ^2 − ^2 − ^2
Where is the region of space bounded by the coordinate planes and the sphere
^2 + ^2 + ^2 = in the positive octant.

User Rag
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Answer: To evaluate the given triple integral, we'll use spherical coordinates, since the region is bounded by a sphere. In spherical coordinates, the volume element is given by:

dV = ρ^2 sin(φ) dρ dφ dθ

where ρ is the radial distance, φ is the polar angle (measured from the positive z-axis), and θ is the azimuthal angle (measured from the positive x-axis in the xy-plane).

The limits of integration for ρ, φ, and θ are as follows:

0 ≤ ρ ≤ √3 (since the sphere has a radius of √3)

0 ≤ φ ≤ π/2 (since the region is in the positive octant)

0 ≤ θ ≤ π/2 (since the region is in the positive octant)

Now, let's evaluate the integral:

√(x^2 + y^2 + z^2) dV

= ∫₀^(π/2) ∫₀^(π/2) ∫₀^√3 (ρ^3 sin(φ) dρ dφ dθ)

= ∫₀^(π/2) ∫₀^(π/2) [ρ^4/4]₀^√3 sin(φ) dφ dθ

= ∫₀^(π/2) ∫₀^(π/2) (3/4)√3 sin(φ) dφ dθ

= ∫₀^(π/2) [-3/4 √3 cos(φ)]₀^(π/2) dθ

= ∫₀^(π/2) (3/4) √3 dθ

= (3/4) √3 [(π/2) - 0]

= (3/4) (π/2) √3

= (3/8) π √3

Therefore, the value of the given triple integral is (3/8) π √3.

Explanation:

User Mattgathu
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