解题方法
1 . 设函数
若
,且
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6519f19f62269ccb49c7e840dab6468.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc0af419f4bc6f089e3304a477589d38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce460941cf3ff54ccb6aec5085689a91.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 已知奇函数
在R上是增函数,
.若
,
,
,则a,b,c的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c532b5af7b88f1c21a7584cfac5fea6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a066813a8e5005cad45bcfa9377628.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b57626b9f4f12188fb8b04803391afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65944bbab245ca79e3aa0c669ba20e54.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 下列命题正确的是( )
A.“关于x的不等式![]() ![]() |
B.设x,![]() ![]() ![]() ![]() |
C.“![]() ![]() |
D.命题“![]() ![]() ![]() |
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解题方法
4 . 函数
是定义在R上的奇函数,下列说法:
①
;
②若
在
上有最小值1,则
在
上有最大值
;
③若
在
上为增函数,则
在
上为减函数;
④若
时,
,则
时,
.
其中正确说法的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bea8bf593f594c51fc7cc547482bee.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2edd8edcb21bd41584daf9bb95a5c7.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/becd598a11b876d858728161a7a09705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e541ea2f855f981c96207070683d388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787c2e85b77a019736904b284d6e8017.png)
其中正确说法的个数是( )
A.1个 | B.2个 | C.3个 | D.4个 |
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解题方法
5 . 若命题“
”为假命题,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf6a482306278338787295523a5ba80a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 已知条件
是有理数,条件
是有理数,则
是q的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6798b461f6bfbdb08729b24d97ab309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8904affe0ad5c182030a6da3a707366d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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7 . 已知集合
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9a9779c1aa971c463447e664aacda8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad87fbedd47367c8d082793c01c3c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f725516b97ffdffa1ff8dc38ab3d3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12fed3bd5bc925cf990e057f43395bff.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 对于实数
下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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9 . 已知函数
的图象关于直线
对称,当
且
时,
恒成立,设
,
,
,则
的大小关系为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3391c61f5b569c58f0ad76588ddab39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8b1c9aa45f5adbc1cfea566e2d9fb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2054560796ab052c5db91d50698cfdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/541d20a456d47fe4fb27c509d3158ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c91129052699d43eaedd7c993d6ef6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba1e7a657ed134e68efd159b606620f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
10 . 已知函数
,
的图象恒过定点A,若点A在一次函数
的图象上,其中m,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4250ec1d917f79063aec24a24cad892b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a00f7581c13ca8ccff7f19b95bcd2fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8610232c77741a37463feba1a66c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27e62ba44cbfec6823ebc1f0c7457fb.png)
A.1 | B.![]() | C.2 | D.4 |
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