• ,则= :middle;" src="http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12196/swd01072234.png">试题及答案-填空题-云返教育

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      ,则=         :middle;" src='http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12196/swd01072234.png'>

      试题解答



      解:因为,令t=2x+1,代入解析式中f(t)=,可知=
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