王强在一次高尔夫球的练习中,在某处击球,其飞行路线满足抛物线,其中y(m)是球的飞行高度,x(m)是球飞出的水平距离,结果球离球洞的水平距离还有2m.(1)请写出抛物线的开口方向、顶
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![王强在一次高尔夫球的练习中,在某处击球,其飞行路线满足抛物线,其中y(m)是球的飞行高度,x(m)是球飞出的水平距离,结果球离球洞的水平距离还有2m.(1)请写出抛物线的开口方向、顶](/uploads/image/z/13831284-12-4.jpg?t=%E7%8E%8B%E5%BC%BA%E5%9C%A8%E4%B8%80%E6%AC%A1%E9%AB%98%E5%B0%94%E5%A4%AB%E7%90%83%E7%9A%84%E7%BB%83%E4%B9%A0%E4%B8%AD%2C%E5%9C%A8%E6%9F%90%E5%A4%84%E5%87%BB%E7%90%83%2C%E5%85%B6%E9%A3%9E%E8%A1%8C%E8%B7%AF%E7%BA%BF%E6%BB%A1%E8%B6%B3%E6%8A%9B%E7%89%A9%E7%BA%BF%2C%E5%85%B6%E4%B8%ADy%EF%BC%88m%EF%BC%89%E6%98%AF%E7%90%83%E7%9A%84%E9%A3%9E%E8%A1%8C%E9%AB%98%E5%BA%A6%2Cx%EF%BC%88m%EF%BC%89%E6%98%AF%E7%90%83%E9%A3%9E%E5%87%BA%E7%9A%84%E6%B0%B4%E5%B9%B3%E8%B7%9D%E7%A6%BB%2C%E7%BB%93%E6%9E%9C%E7%90%83%E7%A6%BB%E7%90%83%E6%B4%9E%E7%9A%84%E6%B0%B4%E5%B9%B3%E8%B7%9D%E7%A6%BB%E8%BF%98%E6%9C%892m%EF%BC%8E%EF%BC%881%EF%BC%89%E8%AF%B7%E5%86%99%E5%87%BA%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%BC%80%E5%8F%A3%E6%96%B9%E5%90%91%E3%80%81%E9%A1%B6)
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