題組內容
2. (50%) Answer the following questions.
(d) Find the point \( (x,y) \) on the line \( x + 2y = 6 \) where the function \( f(x,y) = x^{2} + y^{2} \) reaches its maximum value.
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2. (50%) Answer the following questions.
(d) Find the point \( (x,y) \) on the line \( x + 2y = 6 \) where the function \( f(x,y) = x^{2} + y^{2} \) reaches its maximum value.