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Tresset [83]
3 years ago
10

Write a triple integral including limits of integration that gives the volume of the cap of the solid sphere x2+y2+z2≤5 cut off

by the plane z=2 and restricted to the first octant. (in your integral, use theta, rho, and phi for θ, ρ and ϕ, as needed.)
Mathematics
1 answer:
Bogdan [553]3 years ago
5 0
Since it is in the first octant, if we let \theta be the angle formed in the xy plane, then its limits are simply 0 \leq \theta \leq \frac{\pi}{2}.

The radius is a constant of \sqrt{5} so we integrate from [tex0 \leq \rho \leq \sqrt 5[/tex]

The yz/xz plane doesn't go the full 90 degrees. Instead, it goes to the z=2 plane which means that it forms a triangle of hypotenuse \sqrt{5} and an opposite leg of 2. This produces an angle of \phi = 1.107 so our limits for 0 \leq \phi \leq 1.107

We are just integrating a constant of 1, then we get:

\displaystyle \int_{0}^{\frac{\pi}{2}}\int_{0}^{1.107}\int_{0}^{\sqrt{5}} d\rho d\phi d\theta
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