Consider the following. $f(x, y, z) = \sqrt{x^2 + y^2 + z^2}$ $x^2 + y^2 + z^2 = 25$ E $x^2 + y^2 + z^2 = 100$ (a) Express the triple integral $\iiint_E f(x, y, z) dV$ as an iterated integral in spherical coordinates for the given function $f$ and solid region $E$. $\int_{\pi/2}^{\frac{3\pi}{2}} \int_{\pi/2}^{\pi} \int_5^{10} (\rho^2 \sin \phi) d\rho d\theta d\phi$ (b) Evaluate the iterated integral. 916.30
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In spherical coordinates, $x = \rho \sin \phi \cos \theta$, $y = \rho \sin \phi \sin \theta$, and $z = \rho \cos \phi$. Thus, $x^2 + y^2 + z^2 = \rho^2$, and $f(x, y, z) = \sqrt{\rho^2} = \rho$. Show more…
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11. Use spherical coordinates to calculate the triple integral of f (x, y, z) = x^2 + y^2 + z^2 over the region E = {(x, y, z) | 1 ≤ x^2 + y^2 + z^2 ≤ 4}. Answer: In spherical coordinates, the region is defined by the inequalities 1 ≤ ̑^2 ≤ 4, 0 ≤ ̑ ≤ 2̑, and 0 ≤ ̑ ≤ ̑. Therefore, the integral becomes: ∫∫∫ f (̑, ̑, ̑) ̑^2 sin(̑) d̑ d̑ d̑.
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