Wyznaczyć ekstrema lokalne funkcji g(x, y,z)=x^3+y^2+z^2-3x-4y+1
Zaczełam zadanie, ale dalej nie wiem jak

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Proszę o pomoc

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.