解题方法
1 . 已知指数函数
,且
的图象过点
,
.
(1)若
,求
的取值范围;
(2)判断
在
上的单调性;
(3)设
,试比较
的大小,并将它们按从小到大的顺序排起来.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20cae47ad50ac506ced900f0a5156c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37fa1476cf3552b9ae91ef039b1c6c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93cf960e02c72a12e97c86091b8a8f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ef72191a9ac3bd5a325395a72bdc2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c1d195c6dcc117e03c8703273120401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d94bd43003dbb6412d6fe38c89abd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c5fe8a9ad42e52a8a40242865c6752.png)
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解题方法
2 . 已知定义在R上的函数
满足
,设
,则
的大小顺序是__________ .(用“>”号连接)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef42ef19c30c038b75f1710278ad0c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bc447db991879cbc54684a11f97849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/699d32dbd2b31b313ae7154c9a072775.png)
您最近一年使用:0次