2020高三上·全国·专题练习
解题方法
1 . 下列说法中,正确说法的序号为___________ .(写出所有正确说法的序号)
①正切函数
的图象关于点
对称;
②若
,则
成等比数列;
③函数
和函数
具有相同的单调区间;
④若函数
在
上为增函数,则
的取值范围是
.
①正切函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffa8ddcbbe89ab0f250f56673e2d36c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef183993d9ca7294a680d8797ce79647.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c8379fe535e68721fd84be969d257f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eecf783b0385c573f96e497f7399d038.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d534d9ff88292d2801ef0b0da5deb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c653ed9cff365dfe6648dfd195be416.png)
④若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4fbc9e47ae6b6abea9d0ffafeaab9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cce332317884d04b38b1ebe8a50d18.png)
您最近一年使用:0次
解题方法
2 . 单位圆的内接正
边形的面积记为
,则
_____ ; 下面是关于
的描述:①
;②
的最大值为
;③
④
;其中正确结论的序号为__________ .(注:请写出所有正确结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8715a3f984d2627afd7c40c61347b7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72253d846d8750db2bf695df99c53f3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91d5ad93b7e37e565e745c99f665018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56eb25af98b215b4a97d5f8ab23b4c9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee03d81d3fe9d048da72d5dcdc4f7f6.png)
您最近一年使用:0次
名校
3 . 在实数集R中定义一种运算“*”,
,
为唯一确定的实数,且具有性质:
(1)对任意
,
;
(2)对任意
,
.
关于函数
的性质,有如下说法:
①函数
的最小值为3;
②函数
为偶函数;
③函数
的单调递增区间为
.其中正确说法的序号为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4aa0c78840d268cab45b55637edb43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb77a7d41b4ca1f0b046ee28a89381f6.png)
(1)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/378790985858682bcc6a6d646c79f2f2.png)
(2)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44950387cf251e7bdb83aba962435a66.png)
关于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e39cb61c1784d3d63a4d3fcac2b75c9.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c0c037867665979b6dc75fb995f9ec.png)
A.① | B.①② | C.①②③ | D.②③ |
您最近一年使用:0次
名校
4 . 如图是导函数
的图象,现有四种说法:
①
在
上是增函数;
②
是
的极小值点;
③
在
上是减函数,在
上是增函数;
④
是
的极小值点;
以上正确的序号为( )
![](https://img.xkw.com/dksih/QBM/2020/7/25/2513720647131136/2515094634151936/STEM/a0dd855b6c664a448267dd323872fdfe.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d0c99ddd028f0bc3b1d64924ff0f61.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2157b41548f02a86a438e63238719841.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5511a368692de27c58ec48ce968de4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
以上正确的序号为( )
![](https://img.xkw.com/dksih/QBM/2020/7/25/2513720647131136/2515094634151936/STEM/a0dd855b6c664a448267dd323872fdfe.png?resizew=167)
A.①② | B.②③ | C.③④ | D.②④ |
您最近一年使用:0次
名校
解题方法
5 . 函数
、
,给定下列命题:(1)不等式
的解集为
;(2)函数
在
上单调递增,在
上单调递减;(3)若函数
有两个极值点,则
;(4)若
时,总有
恒成立,则
1.其中正确命题的序号为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb3b6c56aee4bb8a8131fd960415c745.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6543b807bb3d0fdb8b90fc1e2059d5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eee31b9dffcd91ff2f5477410bc09f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04472ba7f928c58fdc67f48f9eba347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269a04a7a7b62ac0be68f0cb9445e606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4939ce3f85f6771217c875c0b5ee8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e83eefa2d62adec7da915408483e4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e436ea3ddcd13e69171135f0ff8e934a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec72ca557aa4229ee871628ffcf0d8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6c7083bc794dc7752400b2429281cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de341c215d0e23469dbebbe6ddaf2ccd.png)
您最近一年使用:0次
6 . 已知函数
,下列结论中,
①函数
的图象关于原点对称;
②当
时,
;
③若
,则
;
④若
对于
恒成立,则a的最大值为
,b的最小值为1.
所有正确结论的序号为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3e81bb5c8b437e92f3742641c812c7e.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b39528ba76158971f75976d7958e83dd.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84063dee78582b05c1dda898ae940374.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489ee6bdfcd4ab6f59801c8916ccfc55.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b715fe2fe875bb5e6c82965fa0cf4970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb6324528c9fe1e0ae58bf993e9c9d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37394553f5ad083293e7bf99e4a97354.png)
所有正确结论的序号为
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
7 . 关于函数
有下述四个结论:①函数
的图像把圆
的面积两等分;②
是周期为
的函数;③函数
在区间
上有3个零点;④函数
在区间
上单调递减.则正确结论的序号为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/885085ae9e6dd542a4105d5549f85142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ff4a1f5d3ad9d7668fe555e70b774c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ff4a1f5d3ad9d7668fe555e70b774c.png)
您最近一年使用:0次
8 . 关于函数
有下述四个结论:
①函数
的图象把圆
的面积两等分;
②
是周期为
的函数;
③函数
在区间
上有
个零点;
④函数
在区间
上单调递减.
则正确结论的序号为_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a459250957b8fca787e08d675accdedc.png)
①函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
③函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa257f460e4ac09d2c68954d5c824d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa257f460e4ac09d2c68954d5c824d.png)
则正确结论的序号为
您最近一年使用:0次
2020高三·全国·专题练习
解题方法
9 . 已知函数
的导函数的图象如图所示:①函数
在
上单调递增;②函数
在
上单调递增;③当
时,函数
取得极小值;④当
时,函数
取得极大值.则上述结论中,正确结论的序号为
![](https://img.xkw.com/dksih/QBM/2020/5/8/2458514486132736/2459046217252864/STEM/b602e9d9a5234dfab1302c91b934ef02.png?resizew=117)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab1242ec96ac54e2fd418988d5190a88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://img.xkw.com/dksih/QBM/2020/5/8/2458514486132736/2459046217252864/STEM/b602e9d9a5234dfab1302c91b934ef02.png?resizew=117)
A.①③ | B.②④ |
C.①④ | D.②③ |
您最近一年使用:0次
名校
10 . 已知
,现给出如下结论:
①
; ②
; ③
; ④
.
其中正确结论的序号为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51a72c6ad7ce018eb290701ffa1e81c.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4890408d45eec0bd81842da526c7c003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2de5d0f8875b46604e5e72805dac6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cab21e264cccf1190527cfd8a29a6e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c7fe89ecc5f6e530a2f2152687b50a6.png)
其中正确结论的序号为( )
A.②③ | B.①④ | C.②④ | D.①③ |
您最近一年使用:0次