Multiply 60 times 7 410, 420, 67, or 430?

Mathematics

1 answer:

DochEvi [55]3 years ago

4 0

Answer:

420

Step-by-step explanation:

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By the chain rule,

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We have

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$\dfrac{\partial w}{\partial y}=\dfrac{2y}{x^2+y^2+z^2}$
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So we have

$\dfrac{\mathrm dw}{\mathrm dt}=\dfrac2{x^2+y^2+z^2}\left(7x\cos t-9y\sin t+6z\sec^2t\right)$
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