• 已知f(x)=x+(a-1)x+a在区间上是增函数,则a的取值范围是 :middle;" src="http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12188/swd00901713.png">试题及答案-填空题-云返教育

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      已知f(x)=x+(a-1)x+a在区间上是增函数,则a的取值范围是         :middle;" src='http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12188/swd00901713.png'>

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      a

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