Math Problem Statement

Carilah nilai-nilai maksimum dan minimum untuk fungsi f(x,y)=x+y-xy pada himpunan S={(x,y):x^2+y^2≤9}! menggunakan cara maksimum dan minimum serta metode pengali Lagrange.

Solution

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Math Problem Analysis

Mathematical Concepts

Multivariable Calculus
Optimization
Lagrange Multipliers

Formulas

f(x, y) = x + y - xy
g(x, y) = x^2 + y^2 - 9
Lagrange multiplier method: ∇f(x, y) = λ∇g(x, y)

Theorems

Lagrange Multiplier Theorem
Critical Point Theorem

Suitable Grade Level

University Level (Multivariable Calculus)