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我給你發過去.……沒人麼?教學目標知識與技能1.總結出二次函數與x軸交點的個數與一元二次方程的根的個數之間的關係,表述何時方程有兩個不等的實根、兩個相等的實數和沒有實根.2.會利用二次函數的圖像求一元二次方…
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