数学函数题(较难),如图所示,在高尔夫球赛中,甲从山坡下O处打出一球向山坡上洞B飞去,已知山坡与水平方向的夹角为30°,OB=18m,秋水平飞行9m时,达到最高处12m,球在空中飞行的轨迹为一抛物线
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![数学函数题(较难),如图所示,在高尔夫球赛中,甲从山坡下O处打出一球向山坡上洞B飞去,已知山坡与水平方向的夹角为30°,OB=18m,秋水平飞行9m时,达到最高处12m,球在空中飞行的轨迹为一抛物线](/uploads/image/z/12571830-54-0.jpg?t=%E6%95%B0%E5%AD%A6%E5%87%BD%E6%95%B0%E9%A2%98%EF%BC%88%E8%BE%83%E9%9A%BE%EF%BC%89%2C%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%9C%A8%E9%AB%98%E5%B0%94%E5%A4%AB%E7%90%83%E8%B5%9B%E4%B8%AD%2C%E7%94%B2%E4%BB%8E%E5%B1%B1%E5%9D%A1%E4%B8%8BO%E5%A4%84%E6%89%93%E5%87%BA%E4%B8%80%E7%90%83%E5%90%91%E5%B1%B1%E5%9D%A1%E4%B8%8A%E6%B4%9EB%E9%A3%9E%E5%8E%BB%2C%E5%B7%B2%E7%9F%A5%E5%B1%B1%E5%9D%A1%E4%B8%8E%E6%B0%B4%E5%B9%B3%E6%96%B9%E5%90%91%E7%9A%84%E5%A4%B9%E8%A7%92%E4%B8%BA30%C2%B0%2COB%3D18m%2C%E7%A7%8B%E6%B0%B4%E5%B9%B3%E9%A3%9E%E8%A1%8C9m%E6%97%B6%2C%E8%BE%BE%E5%88%B0%E6%9C%80%E9%AB%98%E5%A4%8412m%2C%E7%90%83%E5%9C%A8%E7%A9%BA%E4%B8%AD%E9%A3%9E%E8%A1%8C%E7%9A%84%E8%BD%A8%E8%BF%B9%E4%B8%BA%E4%B8%80%E6%8A%9B%E7%89%A9%E7%BA%BF)
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