g(x,y) = x^3 - 3x^2 + 5xy -7y^2(adsbygoogle = window.adsbygoogle || []).push({});

Hessian Matrix =

6x-6******5

5********-7

Now I have to find the eigenvalues of this matrix, so I end up with the equation (where a = lambda)

(6x - 6 - a)(-7 - a) - 25 = 0

Multiplying out I get:

a^2 - 6xa + 13a - 42x + 17 = 0

How am I supposed to solve for a? Usually I just use the quadratic formula for my eigenvalues..

Should I take a third row/ column for my hessian matrix?

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# Homework Help: Hessian matrix

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