点AB在抛物线y^2=4x上,直线AB过抛物线的焦点,且斜率为2(1)求AB弦的长(2)设抛物线顶点为O,求S△AOB(即△AOB面积)
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![点AB在抛物线y^2=4x上,直线AB过抛物线的焦点,且斜率为2(1)求AB弦的长(2)设抛物线顶点为O,求S△AOB(即△AOB面积)](/uploads/image/z/2710567-55-7.jpg?t=%E7%82%B9AB%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BFy%5E2%3D4x%E4%B8%8A%2C%E7%9B%B4%E7%BA%BFAB%E8%BF%87%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E7%84%A6%E7%82%B9%2C%E4%B8%94%E6%96%9C%E7%8E%87%E4%B8%BA2%EF%BC%881%EF%BC%89%E6%B1%82AB%E5%BC%A6%E7%9A%84%E9%95%BF%EF%BC%882%EF%BC%89%E8%AE%BE%E6%8A%9B%E7%89%A9%E7%BA%BF%E9%A1%B6%E7%82%B9%E4%B8%BAO%2C%E6%B1%82S%E2%96%B3AOB%EF%BC%88%E5%8D%B3%E2%96%B3AOB%E9%9D%A2%E7%A7%AF%EF%BC%89)
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