Theory and ExamplesThe discriminant is zero at the origin
Chapter 14, Problem 44E(choose chapter or problem)
Problem 44E
Theory and Examples
The discriminant is zero at the origin for each of the following functions, so the Second Derivative Test fails there. Determine whether the function has a maximum, a minimum, or neither at the origin by imagining what the surface z = f(x,y) looks like. Describe your reasoning in each case.
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