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Hessian Determinant

The Determinant

\begin{displaymath}
Hf(x,y)\equiv\left\vert\matrix{
{\partial^2f\over \partial ...
...\over\partial y^2}\cr}\right\vert\hrule width 0pt height 4.8pt
\end{displaymath}

appearing in the Second Derivative Test as $D\equiv Hf(x,y)$.

See also Second Derivative Test


References

Gradshteyn, I. S. and Ryzhik, I. M. Tables of Integrals, Series, and Products, 5th ed. San Diego, CA: Academic Press, pp. 1112-1113, 1979.




© 1996-9 Eric W. Weisstein
1999-05-25