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首先y二階可導 y' = 3ax^2+2bx+c y'' = 6ax+2b 由題得: y|x=-2 = 44 y|x=1 = -10 y'|x=-2 = 0 y''|x=-10 = 0得4個方程,解方程組即得參數值 a = 1,b = -3,c = -24,d = 16
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