1 . 已知函数
若关于
的方程
有3个实数解![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/586229152055b850bb12078f44aa4375.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c0d827ef8598ba6b70b34b2bdcd1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915e28a6131cf12ea62c8f469d4fa5f2.png)
A.![]() |
B.![]() |
C.![]() |
D.关于![]() ![]() |
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解题方法
2 . 已知
.
(1)若
,求不等式
的解集;
(2)存在区间
,求
的最大值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24da436f7ec242fb65ed7458f5785b6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d1f077b7e7fa236e918b85480c6e38.png)
(2)存在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2ebe3cf51f0a73bdeb9c396c78e68e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95745d8159f65ea60ada2c34d0c30af.png)
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3 . 已知
是
上的减函数,且
,如图,记
为曲线
与直线
,直线
,以及
轴围成的图形的面积,并约定
.已知
,对任意正数
,当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/578602c6-842e-4f6b-8da2-3553e172ac1a.png?resizew=157)
(1)求
与
;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cd50020c0e3198d4a6b2d26a413b1b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebadf71a3c73c1d82ae821018a7f67c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b8dc1c868e194693aca8526df70e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae52fec0134afc670aed78812818bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0733a8512b7ec53396842328f6e7cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f34b3ff8c658fc5cf2c3b5ae5a9443dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b4c102ae0e48d1a26964c466461800.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94595481ba773bf66e7d3293b5318f59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/578602c6-842e-4f6b-8da2-3553e172ac1a.png?resizew=157)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3724599ff059a3223fb4d51ae0febd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6aa67fa4d7e6697eefd238814004388.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93fd5334937da8063dee79c23bc05006.png)
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4 . 试写出一个函数
,使其满足以下三个条件:函数的周期为
;函数的图象关于直线
对称;函数在
上单调递减.则
的解析式可以为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c63e1c64c42b7f3b7fdc396d4756cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076172c175baeec0928da853969c836a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ba99a5c5661eedaef4b36ade1a7c5c5.png)
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5 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea365ff7cf01df149db94fe9653c498b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff043b1ec1f4640699821cdb16689464.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea365ff7cf01df149db94fe9653c498b.png)
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解题方法
6 . 计算下列各式的值,其结果为2的有( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 已知扇形的周长是6,面积是2,则扇形的半径和圆心角可能为( )
A.半径为2,圆心角为1 | B.半径为1,圆心角为2 |
C.半径为1.圆心角为4 | D.半径为4,圆心角为1 |
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8 . 设函数
(
且
)在区间
上单调递增,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e2243c0917bb642e7f734498e49ccfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbbb4726a619e54f0bc53e3e4d6c8976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知函数
(
且
)的图象经过定点
,则
的坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b9abfca4a2202a170ff6d713d01982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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10 . 命题“
,
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d94b826e1766a5b0a9a2be4e173f0209.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次