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一元二次函數:二次曲線可以是橢圓,雙曲線,抛物線.但一般來說都是指形如y=ax^2+bx+c(其中a不等於0)形式的函數叫做一元二次函數.1、當a>0時的性質:(1)圖像開向上.(2)它的頂點座標是[ -b/(2*a),(4ac-b^2)/(4a)](…
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