设a,b属于R,且b不等于1.若函数y=a|x-1|+b的图象与直线y=x恒有公共点,则a,b应满足的条件是_________ 答案b-1or b>1,a0时 1.可知第二个函数恒过(1,b)点,当b>1时,即此点在y=x的上方,此时若a>=1时,函数图象
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![设a,b属于R,且b不等于1.若函数y=a|x-1|+b的图象与直线y=x恒有公共点,则a,b应满足的条件是_________ 答案b-1or b>1,a0时 1.可知第二个函数恒过(1,b)点,当b>1时,即此点在y=x的上方,此时若a>=1时,函数图象](/uploads/image/z/2835068-68-8.jpg?t=%E8%AE%BEa%2Cb%E5%B1%9E%E4%BA%8ER%2C%E4%B8%94b%E4%B8%8D%E7%AD%89%E4%BA%8E1.%E8%8B%A5%E5%87%BD%E6%95%B0y%3Da%7Cx-1%7C%2Bb%E7%9A%84%E5%9B%BE%E8%B1%A1%E4%B8%8E%E7%9B%B4%E7%BA%BFy%3Dx%E6%81%92%E6%9C%89%E5%85%AC%E5%85%B1%E7%82%B9%2C%E5%88%99a%2Cb%E5%BA%94%E6%BB%A1%E8%B6%B3%E7%9A%84%E6%9D%A1%E4%BB%B6%E6%98%AF_________+%E7%AD%94%E6%A1%88b-1or+b%3E1%2Ca0%E6%97%B6+1.%E5%8F%AF%E7%9F%A5%E7%AC%AC%E4%BA%8C%E4%B8%AA%E5%87%BD%E6%95%B0%E6%81%92%E8%BF%87%EF%BC%881%2Cb%EF%BC%89%E7%82%B9%2C%E5%BD%93b%3E1%E6%97%B6%2C%E5%8D%B3%E6%AD%A4%E7%82%B9%E5%9C%A8y%3Dx%E7%9A%84%E4%B8%8A%E6%96%B9%2C%E6%AD%A4%E6%97%B6%E8%8B%A5a%3E%3D1%E6%97%B6%2C%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1)
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