If , find the value of the directional derivative at the point in the direction given by the angle . I need help solving this problem, im not sure what to do with the . The formula is
Last edited by viet; Feb 26th 2009 at 06:44 PM. Reason: latex fix
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Originally Posted by viet I need help solving this problem, im not sure what to do with the . The formula is Here, for your direction, and well, you have .
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