Ex: Find the Gradient of the Function f(x,y)=xy

This video explains how to find the gradient of a function of two variables.   The meaning of the gradient is explained and shown graphically.

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Ex: Use the Gradient to Find the Maximum Rate of Increase of f(x,y)=(4y^5)/x from a Point

This video explains how to use the gradient of a function of two variables to determine the maximum rate of a function of two variable from a given point.  The results are explains graphically.