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#### Petrus

##### Well-known member

- Feb 21, 2013

- 739

I find a point at \(\displaystyle (-1/2,1,1)\) now I have to check if it is semidefinit etc.. But I only know the formula for 2 variable \(\displaystyle Q(h,k)\) I try search this method in My book and cant find it.. What you call this method and what is \(\displaystyle Q(h,k,l)\) I indeed need to read about this one so feel free if you got a Link!

Regards,

\(\displaystyle |\pi\rangle\)