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实际问题与二次函数(3)
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实际问题与二次函数(2)
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实际问题与二次函数(1)
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用函数观点看一元二次方程
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二次函数的y=ax2+k bx+c图像
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二次函数y=a(x-h)2+k 的图象1
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二次函数y=ax2的图象
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弧长和扇形面积2
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弧长和扇形面积(1)
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直线与圆的位置关系(3)
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直线与圆的位置关系(2)
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直线与圆的位置关系
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点和圆的位置关系
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圆周角(2)
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圆周角
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垂直于弦的直径
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圆
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一元二次方程根的判别式
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一元二次方程（复习1）
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