1 . 已知函数
(
).
(1)若
,证明:当
时,
;
(2)讨论方程
的实数解的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce9c45fee6e42e80a19721f10f04673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc534f86d1e1388a66f67ec075e86cc.png)
(2)讨论方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a5dac1cd77539390db9889a58514bb.png)
您最近一年使用:0次
名校
2 . 已知函数
(
为自然对数的底),
(
为常数),
是实数集
上的奇函数.
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81cb18ce545a8db1c230799da480f58.png)
;
(2)讨论关于
的方程:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea2ee86d6ab60f27e3bfb5f04d01c68.png)
的根的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cdab6a9f42a3448cc3fba0051ce85a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414a651628cd79b89f3ecbc20c7b9c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e03ad0c315806342d6cd732a0b91a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81cb18ce545a8db1c230799da480f58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8d1b6c0637fe01db29193837c58155.png)
(2)讨论关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea2ee86d6ab60f27e3bfb5f04d01c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54000b2f0263c7da2ce0e387ac826e.png)
您最近一年使用:0次