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Lagrange Multipliers ● Example 5

Extremizing f(x, y)=(x²- 2x y² + 3y²) / 6 with the constraint condition: g(x,y):= (x²+ y²)² - 9x y - 2.53125 = 0. CAS and ggB solutions are compared. The critical points of the corresponding Lagrangian, its global maximum and minimum are determined.
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