Mathematics · Multivariable Calculus
For a twice continuously differentiable function Z = f(x, y), a critical point is a saddle point if the Hessian determinant condition satisfies:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1fxx fxy2
- 2fxx > 0 and fxxfyy > fxy2
- 3fxx > 0 and fxxfyy = fxy2
- 4fxxfyy < fxy2✓
Correct answer
fxxfyy < fxy2
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