2 years ago

Can i have help with these two questions. Im not sure where i went wrong

Mathematics

1 answer:

makkiz [27]2 years ago

7 0

Answer:

3*2 is 6 not 9 in 1st one in formula(x-3)

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I'm not sure what the given direction vector is supposed to be, but my best guess is that it's intended to say $\vec u=15\,\vec\imath+25\,\vec\jmath$ , in which case we have

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$D_{\vec u}f(-1,4,3)=\nabla f(-1,4,3)\cdot\dfrac{\vec u}{\|\vec u\|}=\boxed{\dfrac{294}{\sqrt{34}}}$

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