Question

Find and classify the extreme values of equation

Subject to the constraint 


equation

 

 

09 Jan 2026
Answer :
Word Count : 137
Consider the function (f(x,y)=xy) subject to the constraint [ g(x,y)=\frac{x^{2}}{8}+\frac{y^{2}}{2}-1=0. ] Using Lagrange multipliers, we solve [ \nabla f=\lambda \nabla g. ] Thus, [ (y,x)=\lambda\left(\frac{x}{4},y\right), ] which gives the system [ y=\lambda\frac{x}{4}, \qquad x=\lambda y. ]
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