- #1

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## Homework Statement:

- Study the function's maximum and minimum

## Relevant Equations:

- All below.

ƒ(x,y) = 3x + y

x² + 2y² ≤ 1

It is easy to find the maximum, the really problem is find the minimum, here is the system:

(3,1) = λ(2x,4y)

x² + 2y² ≤ 1

how to deal with the inequality?