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Anit [1.1K]
2 years ago
5

Maths help me maths giving 10 point​

Mathematics
1 answer:
anyanavicka [17]2 years ago
8 0

Step-by-step explanation:

x-2>4

x>6

And

3x+1\leq 28

3x\leq 27

x\leq 9

So x ∈ (6, 9]

Please give me a brainliest answer

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2 years ago
Let w = x2 + y2 + z2, x = uv, y = u cos(v), z = u sin(v). use the chain rule to find ∂w ∂u when (u, v) = (9, 0).
jasenka [17]
By the chain rule,

\dfrac{\partial w}{\partial u}=\dfrac{\partial w}{\partial x}\cdot\dfrac{\partial x}{\partial u}+\dfrac{\partial w}{\partial y}\cdot\dfrac{\partial y}{\partial u}+\dfrac{\partial w}{\partial z}\cdot\dfrac{\partial z}{\partial u}
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