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Real-Valued Function z(x, y)

See contour plot for another view of z.
Explore: Rotate the graph and identify minima, maxima, and saddlepoints of z.
Experiment: Change the coefficient a =1 to a = -1.  Comment on your observations.

[ Main | Function | x-Partial | x-Zeros | y-Partial | y-Zeros | Solution | Hessian | Classification ]