1.求经过点A(2,-1),和直线x+y=1相切,且圆心在直线y=-2x上的园的方程.2.已知动点M到点A(2,c)的距离是它到点B(8,0)的距离的一半,求:(1):动点M的轨迹方程;(2):若N为线段AM的中点,试
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![1.求经过点A(2,-1),和直线x+y=1相切,且圆心在直线y=-2x上的园的方程.2.已知动点M到点A(2,c)的距离是它到点B(8,0)的距离的一半,求:(1):动点M的轨迹方程;(2):若N为线段AM的中点,试](/uploads/image/z/2483958-30-8.jpg?t=1.%E6%B1%82%E7%BB%8F%E8%BF%87%E7%82%B9A%EF%BC%882%2C-1%EF%BC%89%2C%E5%92%8C%E7%9B%B4%E7%BA%BFx%2By%3D1%E7%9B%B8%E5%88%87%2C%E4%B8%94%E5%9C%86%E5%BF%83%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3D-2x%E4%B8%8A%E7%9A%84%E5%9B%AD%E7%9A%84%E6%96%B9%E7%A8%8B.2.%E5%B7%B2%E7%9F%A5%E5%8A%A8%E7%82%B9M%E5%88%B0%E7%82%B9A%EF%BC%882%2Cc%EF%BC%89%E7%9A%84%E8%B7%9D%E7%A6%BB%E6%98%AF%E5%AE%83%E5%88%B0%E7%82%B9B%EF%BC%888%2C0%EF%BC%89%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%9A%84%E4%B8%80%E5%8D%8A%2C%E6%B1%82%EF%BC%9A%EF%BC%881%EF%BC%89%EF%BC%9A%E5%8A%A8%E7%82%B9M%E7%9A%84%E8%BD%A8%E8%BF%B9%E6%96%B9%E7%A8%8B%EF%BC%9B%EF%BC%882%EF%BC%89%EF%BC%9A%E8%8B%A5N%E4%B8%BA%E7%BA%BF%E6%AE%B5AM%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%AF%95)
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