Saddle or valley?

Find the critical point of $f (x, y) = x^{2} + x y + y^{2} - 3 x$ . Enter it as $(x, y)$ .

~5 minAnswer checked instantlyCritical pointsSecond-derivative test

Stuck? A gentle nudge

Something off?

Workspace

Your answer

Loading the math keyboard…

Type naturally — sqrt, pi, / and ^ become notation. Any equivalent form is accepted. Press Enter to check.