已知直线L:X+Y-9=0,园M:2X^2+2Y^2-8X-8Y-1=0,点A在直线L上,B,C在园M上,在△ABC中,角BAC=45°,AB过圆心M,求A的横坐标的取值范围
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![已知直线L:X+Y-9=0,园M:2X^2+2Y^2-8X-8Y-1=0,点A在直线L上,B,C在园M上,在△ABC中,角BAC=45°,AB过圆心M,求A的横坐标的取值范围](/uploads/image/z/13298414-14-4.jpg?t=%E5%B7%B2%E7%9F%A5%E7%9B%B4%E7%BA%BFL%3AX%2BY-9%3D0%2C%E5%9B%ADM%3A2X%5E2%2B2Y%5E2-8X-8Y-1%3D0%2C%E7%82%B9A%E5%9C%A8%E7%9B%B4%E7%BA%BFL%E4%B8%8A%2CB%2CC%E5%9C%A8%E5%9B%ADM%E4%B8%8A%2C%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92BAC%3D45%C2%B0%2CAB%E8%BF%87%E5%9C%86%E5%BF%83M%2C%E6%B1%82A%E7%9A%84%E6%A8%AA%E5%9D%90%E6%A0%87%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
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