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Thread: f decreases most rapidly at Q

  1. May 2nd 2008, 12:04 AM #1
    vincent8818
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    f decreases most rapidly at Q

    Find a unit vector in the direction in which f decreases most rapidly at Q
    Thank u!
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  2. May 2nd 2008, 01:21 AM #2
    CaptainBlack
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    Quote Originally Posted by vincent8818 View Post
    Find a unit vector in the direction in which f decreases most rapidly at Q
    Thank u!
    \nabla f is the direction of most rapid increase, so -\nabla f is the direction of most rapid decrease, so now you need only normalise it.

    RonL
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« Implicit differetiation | Directional derivatives »

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