已知二次函数y=x2-2mx+4m-8(1)当x≤2时,函数值y随x的增大而减小,求m的取值范围.(2)以抛物线y=x2-2mx+4m-8的顶点A为一个顶点作该抛物线的内接正三角形AMN(M,N两点在抛物线上),请问:△AMN的
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![已知二次函数y=x2-2mx+4m-8(1)当x≤2时,函数值y随x的增大而减小,求m的取值范围.(2)以抛物线y=x2-2mx+4m-8的顶点A为一个顶点作该抛物线的内接正三角形AMN(M,N两点在抛物线上),请问:△AMN的](/uploads/image/z/1083175-7-5.jpg?t=%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dx2-2mx%2B4m-8%EF%BC%881%EF%BC%89%E5%BD%93x%E2%89%A42%E6%97%B6%2C%E5%87%BD%E6%95%B0%E5%80%BCy%E9%9A%8Fx%E7%9A%84%E5%A2%9E%E5%A4%A7%E8%80%8C%E5%87%8F%E5%B0%8F%2C%E6%B1%82m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%EF%BC%8E%EF%BC%882%EF%BC%89%E4%BB%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3Dx2-2mx%2B4m-8%E7%9A%84%E9%A1%B6%E7%82%B9A%E4%B8%BA%E4%B8%80%E4%B8%AA%E9%A1%B6%E7%82%B9%E4%BD%9C%E8%AF%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E5%86%85%E6%8E%A5%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2AMN%EF%BC%88M%2CN%E4%B8%A4%E7%82%B9%E5%9C%A8%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%EF%BC%89%2C%E8%AF%B7%E9%97%AE%EF%BC%9A%E2%96%B3AMN%E7%9A%84)
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