Syarikat Seri Utama produces ceiling fan for domestic market. The annual automated equipment and material cost (in thousands of ringgit) is given by C(x,y) = 2x² + 2xy +3y² – 20x – 18y + 89 where x is the amount spent per year on automated equipment (in thousands of ringgit) and y is the amount spent on materials (in thousands of ringgit). i. Determine how much should be spent on each input per year to minimize cost of production.

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