Dorsa R.

asked • 03/17/20

Can we prove that this equation is positive or negative definite by factorizating it ?

p(x,y,z) = 3x2 + y2 +2z2 - 2xy +2xz - 2yz

2 Answers By Expert Tutors

By:

Dorsa R.

thanks for the answer but can we make it square like and get the same answer ?
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03/17/20

Matthew S.

tutor
I'm not sure what you mean by "square like". I tried calculating the characteristic polynomial of matrix A to see if it could be factored. I didn't succeed in finding a rational root... I may have messed up the calculation.
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03/17/20

Dorsa R.

that's fine thanks for your effort
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03/18/20

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