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NISA [10]
4 years ago
10

Describe the vector as an ordered pair. Round the coordinates to the nearest tenth.

Mathematics
1 answer:
kobusy [5.1K]4 years ago
6 0
<span>As diagram is not drawn to scale then
</span><span>=(54 cos 69 degrees , 54 sin 69 degrees)
= (19.4 , 50.4)
</span><span>hope it helps
</span>

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aleksandr82 [10.1K]

It's unclear whether the ODE is

xy'+y=4xy^2

or

xy+y'=4xy^2

If the first case, then divide through both sides by y^2 to get

xy^{-2}y'+y^{-1}=4x

then substitute z=y^{-1}, so that z'=-y^{-2}y'. Then

-xz'+z=4x\implies-\dfrac1xz'+\dfrac1{x^2}z=\left(-\dfrac1xz\right)'=\dfrac4x

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If the second, then dividing through by y^2 gives

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The same substitution as before gives

xz-z'=4x\implies e^{-x^2/2}z'-xe^{-x^2/2}z=\left(e^{-x^2/2}z\right)'=-4xe^{-x^2/2}

\implies e^{-x^2/2}z=\displaystyle-4\int xe^{-x^2/2}\,\mathrm dx

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Answer:

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Step-by-step explanation:

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Step-by-step ex

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