直角三角形AOB的两直角边分别在坐标轴上,OB=根3,角BAO=30度.将直角三角形AOB沿直线BC折叠,是BO咯在BA上,O与D重合,折痕为BC(1)求直线BC的表达式(2)求经过B,C,A的抛物线表达式,若他顶点为M,则M
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![直角三角形AOB的两直角边分别在坐标轴上,OB=根3,角BAO=30度.将直角三角形AOB沿直线BC折叠,是BO咯在BA上,O与D重合,折痕为BC(1)求直线BC的表达式(2)求经过B,C,A的抛物线表达式,若他顶点为M,则M](/uploads/image/z/13273315-43-5.jpg?t=%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2AOB%E7%9A%84%E4%B8%A4%E7%9B%B4%E8%A7%92%E8%BE%B9%E5%88%86%E5%88%AB%E5%9C%A8%E5%9D%90%E6%A0%87%E8%BD%B4%E4%B8%8A%2COB%3D%E6%A0%B93%2C%E8%A7%92BAO%3D30%E5%BA%A6.%E5%B0%86%E7%9B%B4%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2AOB%E6%B2%BF%E7%9B%B4%E7%BA%BFBC%E6%8A%98%E5%8F%A0%2C%E6%98%AFBO%E5%92%AF%E5%9C%A8BA%E4%B8%8A%2CO%E4%B8%8ED%E9%87%8D%E5%90%88%2C%E6%8A%98%E7%97%95%E4%B8%BABC%EF%BC%881%EF%BC%89%E6%B1%82%E7%9B%B4%E7%BA%BFBC%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%EF%BC%882%EF%BC%89%E6%B1%82%E7%BB%8F%E8%BF%87B%2CC%2CA%E7%9A%84%E6%8A%9B%E7%89%A9%E7%BA%BF%E8%A1%A8%E8%BE%BE%E5%BC%8F%2C%E8%8B%A5%E4%BB%96%E9%A1%B6%E7%82%B9%E4%B8%BAM%2C%E5%88%99M)
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