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Daniel [21]
3 years ago
6

Solve 3( − 3 −3 x ) + 4 = − 53 ( − 3 − 3 x ) + 4 = − 5.

Mathematics
1 answer:
Rashid [163]3 years ago
8 0
-9-9x+4=159+159x+4=-5
-5-9x=163+159x=-5
+5       +5
-9x=168+159x=-5
+9x        +9x
168+168x=-5
-168           -168
168x=-173
x= 
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x=±9 and y=10

Step-by-step explanation:

so for x

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Use the Chain Rule to find the indicated partial derivatives. z = x^4 + xy^3, x = uv^4 + w^3, y = u + ve^w Find : ∂z/∂u , ∂z/∂v
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I'll use subscript notation for brevity, i.e. \frac{\partial f}{\partial x}=f_x.

By the chain rule,

z_u=z_xx_u+z_yy_u

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z=x^4+xy^3\implies\begin{cases}z_x=4x^3+y^3\\z_y=3xy^2\end{cases}

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When u=1,v=1,w=0, we have

\begin{cases}x(1,1,0)=1\\y(1,1,0)=2\end{cases}\implies\begin{cases}z_x(1,2)=12\\z_y(1,2)=12\end{cases}

and the partial derivatives take on values of

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3 years ago
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