解题方法
1 . 若函数
(
且
)满足
,则不等式
的解集为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9928c5de6512255577df70857b20124a.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/20ed85d47b4f488a9b5e211938cc5424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d752d8db8a05b3ec7312f6ac8b64a07.png)
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2 . 下列说法正确的是( )
A.使![]() ![]() ![]() |
B.由幂函数![]() ![]() ![]() |
C.若函数![]() ![]() ![]() |
D.若![]() ![]() |
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解题方法
3 . 不等式
对任意实数
恒成立,则参数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86024a6549f7e8cffdc2c443c71c60a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
4 . 已知函数
的零点在区间
内,则整数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d235f0c4a6960159ff547abf95d54f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0b7845c4518a6d7e95246a18644c31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 对于实数
,“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e30c903d8f8a05332af0b19e7e40df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c5fc0b68054c031aefd5d6ab4d17d8.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
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6 . 命题“
,
”的否定是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35eac3ba2858adffcd1f8052cd795269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57141c0dc7ec367908f8b205d4b01c86.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
7 . 如图,在四面体
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cdda4fb929ecf0957a6f9c2771a956.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/39c9236c-d3a5-4aff-a0f7-d231512fd21a.png?resizew=160)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
(2)若
,求四面体
的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75cdda4fb929ecf0957a6f9c2771a956.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/39c9236c-d3a5-4aff-a0f7-d231512fd21a.png?resizew=160)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac7613f441a8b5552a178943f8fa1ec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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解题方法
8 . 已知
.
(1)若
,求不等式
的解集;
(2)若对任意
,恒有
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72a3898613004711be8ace37eb12561d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48d425c2c80c96c431a5d4e06928f930.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafce249be1aeee0581417db4ce841db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92323e0b674647b4f9ba517a93b25fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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9 . 在直角坐标系
中,曲线
的参数方程是
(
为参数),以坐标原点为极点,
轴的正半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求
的普通方程与极坐标方程;
(2)判断
与
的公共点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d8fa99347327243f9f275b763ce159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/552df21d856caacf2792162cfaf0349b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
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解题方法
10 . 已知单位向量
满足
,则
夹角的余弦值为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d287a27c7a21322557641ac8fbca59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
您最近一年使用:0次