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Math Help - Equation of a tangent plane

  1. #1
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    Equation of a tangent plane

    I have a function f(x,y) and I have worked out fx and fy to find the turning points. What is the gradient of the tangent plane at a particular point as fx and fy give different answers? Thanks
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  2. #2
    MHF Contributor matheagle's Avatar
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    I'm not sure what you're asking.
    The gradient is the normal to the tangent plane.
    Show your work, so I can figure out the question.
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