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Math Help - Can anyone please help me with this question?

  1. #1
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    Can anyone please help me with this question?

    Can anyone please help me with this question?-ma24j-202007-8-20a-20001.pdf

    Hello, I am having trouble with question 4 on this past paper and wondered if anyone could help me with it? It's to do with directional derivatives....

    Thank you
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  2. #2
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    Quote Originally Posted by HorseStar2 View Post
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    Hello, I am having trouble with question 4 on this past paper and wondered if anyone could help me with it? It's to do with directional derivatives....

    Thank you
    The direction in which \Psi changes at the greatest rate is given by \nabla \Psi. Calculate it. Now calculate the directional derivative of \phi in that direction.
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