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3 years ago

−2/3(15x + 3) = −3x − 9 what is x?

Mathematics

1 answer:

asambeis [7]3 years ago

5 0

Answer:

X=1

Step-by-step explanation:

-10x-2=-3x-9

-10x-2+2=-3x-9+2

-10x=-3x-7

-10x+3x=-3x-7+3x

-7x=-7

Then divide both sides by -7

x=1

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3 years ago

Use the Chain Rule (Calculus 2)

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I'm going to switch up the notation to save space, so for example, $z_x$ is shorthand for $\frac{\partial z}{\partial x}$ .

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We have

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Similarly,

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To capture all the partial derivatives of $w$ , compute its gradient:

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$z_s=z_xx_s+z_yy_s$

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$y=s^2t\implies\begin{cases}y_s=2st\\y_t=s^2\end{cases}$

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