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設二元一次方程:m=ax²;+bx+c,代入數位時 {6=a+b+c, 10=4a+2b+c, 15=9a+3b+c, 解得:a=0.5,b=2.5,c=3 所以得到規律:m=0.5x²;+2.5x+3
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