抛物线 的顶点坐标是 。 抛物线y=x2-2x+4的开口方向是______;顶点坐标是...

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扩展阅读:抛物线顶点坐标的求法 ... 四种抛物线 ... 初三数学抛物线顶点式 ... 抛物线的顶点是 ... 抛物线必记8个结论 ... 知道顶点坐标求抛物线 ... 一元二次方程抛物线顶点 ... 倒抛物线图 ... 抛物线判断有几个根 ...

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