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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- May 5th 2010, 04:26 PMjpquinn91Equation 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

- May 5th 2010, 06:04 PMmatheagle
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.