1 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5017b46ee71ee28ab520741d6169ed.png)
______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b469af7e65164f77399f1ceb57ad47.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f3bf108455513aeff1c0c6ab5947ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5017b46ee71ee28ab520741d6169ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b469af7e65164f77399f1ceb57ad47.png)
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解题方法
2 . (1)已知f
=x2+
,求f(x);
(2)已知一次函数f(x)满足f(f(x))=4x-1,求f(x);
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40662526b399d11ae614e829c36ef114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549b2ba7e9901807ef99beafa64ff956.png)
(2)已知一次函数f(x)满足f(f(x))=4x-1,求f(x);
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2020-10-14更新
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1167次组卷
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3卷引用:第2课时 课前 函数的表示方法(完成)