名校
1 . 已知函数
,若函数
有 3 个极值点
,则实数
的取 值范围是_______ ; 若
,则实数
的取值范围是 _____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9180806e001b88049b9441af6ad1d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcee20976de0e0e8c1ccd7a951674691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9facbec77e33a43dc5cec58eea852d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
解题方法
2 . 已知函数
,将
的图象向左平移
个单位长度,得到函数
的图象,若关于
的方程
在
上有5个实数根,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a588fc1a0ebb306d4af236ae1e2d93.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03883a34d20510fb8b66243ed3b9a71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19496b1582d55710b12c831f5bcc9b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f98d2ddce01e8a8861442e990d3830e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23937ecd85d1711e6e40df115ad3b0d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a588fc1a0ebb306d4af236ae1e2d93.png)
您最近一年使用:0次
3 . 已知
与
的图像上恰有两对关于
轴对称的点,则
的取值范围为_____________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e203fd8fc60b9010ae52f5d0ba0378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16db42a4c86f77e3262889bede7eea95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
4 . 已知函数
在
上仅有两个零点,则实数
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd69e1358c1008079a5c9324f685e604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
5 . 已知函数
,若
的图象与
轴有3个不同的交点,则实数
的取值范围是__________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fa3bb77c971beb9a62f166fde545458.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e44d9de2cee26966ad19e87a7d6c85b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
6 . 若关于
的方程
有4个不同的实数解,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176ce7f2b75a8ee5a6649b6c80bd0d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
解题方法
7 . 函数
,若关于x的方程
恰好有4个不同的实数根,则实数t的取值范围是____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dae08066247229136919391aa9704f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd910e8af089632e20f4fa350a864157.png)
您最近一年使用:0次
名校
8 . 设
,函数
,
①若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ ;
②若函数
有且仅有两个零点,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c33e2014cceb8a6c677abad0ee5574d.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99d002d8423808d081345bdac6c25f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64e2f18416dc95cf10b11e69d7cc6783.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
9 . 已知函数
(
)在
上的图象有且仅有3个最高点.下面四个结论:
①
在
上的图象有且仅有3个最低点;
②
在
至多有7个零点;
③
在
单调递增;
④
的取值范围是
;
则正确的结论是______ .(填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8046aa421d61d05da2f197f61c79ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bccd6a6e85bdf500218a3e75b31f3c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8ec0ccdb6db6fbaeb1172e281ec22f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8ec0ccdb6db6fbaeb1172e281ec22f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0145c944dd3216b95c2fe55aa2fb17f.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b53b5494acfb30338683d64d35357a.png)
则正确的结论是
您最近一年使用:0次
10 . 对任意的实数x,记函数
(
表示m,n中的较小者).若方程
恰有5个不同的实根,则实数t的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/539c7ad402325e12caaaec976b378355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0898d7174604fa223558cb25b4c78b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83b27c57488f196beb569272db63fd22.png)
您最近一年使用:0次