1 . 已知
,
,且
,
,求:
(1)
的值;
(2)
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff81171e8634ac56f678a245781517a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f593eac79d2ef9cae8257cb05d22dc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2d00ef3a01f64abcd50284fa21c85e.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f021a65c471011ee58a992ec8bf79f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db796b223b35e52aa7b4114da8072f5.png)
您最近一年使用:0次
解题方法
2 . 已知点
,且点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721e5a1d0b7dee53969e1f33fd5d9b4.png)
.
(1)若点
在直线
上,求
的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1845a60deb152288cfbb8e27e6c15096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f721e5a1d0b7dee53969e1f33fd5d9b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4ce60d64df029a90dfe9cdf8c75716.png)
(1)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e68367749d9a8c10cc73c384d252390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/596f68ba4b746cab4b2c26ffce554b5a.png)
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解题方法
3 . 设
为实数,向量
,
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b099d7a8b92322302cd8a010cb1d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e4f0c06cce5e12880b3aa7a644033cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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4 . 函数
的零点为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6500ef7b8f1c8603f7220a16ebf749.png)
您最近一年使用:0次
名校
解题方法
5 . 在
中,角
的对边分别为
,
,则角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb563146cb7e87f230d1345da56fe35a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26308ea6d8f321d27acbd7f9b131f9f1.png)
您最近一年使用:0次
解题方法
6 . 将函数
图象上的点
向左平移
个单位长度得到点
,若
在函数
的图象上,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74cae2ca85e5fcce4451ebbfa8ee830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2998b15e4dabf5d80e43c6e344c7be5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdb19d4fbe1a03d7e64f03e6c0bf0ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881eb05d2adcae4fcb05e4e18817b5a.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
解题方法
7 . 已知复数
,
是实数.
(1)求复数
;
(2)设
,求
;
(3)若复数
在复平面内所表示的点在第二象限,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825f317b79811e9cbab73a57268d562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/127e7f216f81b78084fcb5af2da60389.png)
(1)求复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5838ef9b71a7e46e52b64d6792c72706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f06421ca826efebed1ee69b381b079bd.png)
(3)若复数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c9069b3d40dbe19d780fb056155e34.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
8 . 已知各项均为正数的数列
,其前
项和为
.数列
为等差数列且满足
,
,数列
满足
,求解下列问题:
(1)求数列
的通项公式及前
项和
;
(2)若对任意
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1426751ddb78f554c9e2fec9521033c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/476741aadbb21b562ac1f1c99c9d4f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/893b6639a4f666c78923590b8bcce1f2.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e747b29dd43d669b39915527c9f571.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
名校
9 . 在
中,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb2a33a8d47c459478c9af6c4cc03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次