2 years ago

Evaluate if f(x)=x+8+15,g(x)4x-2andh(x)=x-5x-14

Mathematics

1 answer:

Harlamova29_29 [7]2 years ago

7 0

Answer is C! Hope it helps

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$i = \sqrt{ \frac{p}{r} }$

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2 years ago

Please answer this correctly

musickatia [10]

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12.5%

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2 years ago

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12:30

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2 years ago

Find the surface area of the part of the sphere x2+y2+z2=81 that lies above the cone z=x2+y2−−−−−−√

TiliK225 [7]

Parameterize the part of the sphere by

$\mathbf s(u,v)=(9\cos u\sin v,9\sin u\sin v,9\cos v)$

with $0\le u\le2\pi$ and $0\le v\le\dfrac\pi4$ . Then

$\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|=81\sin v\,\mathrm du\,\mathrm dv$

So the area of $S$ (the part of the sphere above the cone) is given by

$\displaystyle\iint_S\mathrm dS=81\int_{v=0}^{v=\pi/4}\int_{u=0}^{u=2\pi}\sin v\,\mathrm du\,\mathrm dv=81(2\pi)\left(1-\dfrac1{\sqrt2}\right)=(162-81\sqrt2)\pi$

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3 years ago