3 years ago

PLEASE HELP ME!

Mathematics

1 answer:

wlad13 [49]3 years ago

5 0

Answer:

it will similar by ( SAS ) property

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$\displaystyle\iint_R\sin(384x^2+486y^2)\,\mathrm dA$

Notice that Given that $R$ is an ellipse, consider a conversion to polar coordinates:

$\begin{cases}x(r,\theta)=\frac r8\cos\theta\\y(r,\theta)=\frac r9\sin\theta\end{cases}$

The Jacobian for this transformation is

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Then the integral in polar coordinates is

$\displaystyle\frac1{72}\int_0^{\pi/2}\int_0^1\sin(6r^2\cos^2t+6r^2\sin^2t)r\,\mathrm dr\,\mathrm d\theta=\int_0^{\pi/2}\int_0^1r\sin(6r^2)\,\mathrm dr\,\mathrm d\theta=\boxed{\frac{\pi\sin^23}{864}}$

where you can evaluate the remaining integral by substituting $s=6r^2$ and $\mathrm ds=12r\,\mathrm dr$ .

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3 years ago

What's the product of 3 2⁄3 and 14 2⁄5 ?

polet [3.4K]

3 2/3=11/3
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At the school play, 194 people attended the show on the first night and 185 people attended the show on the second night. How ma

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379 people attended the show

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Step-by-step exanation:

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