1 . 下列命题为真命题的是( )
A.复数![]() ![]() |
B.半径为3的球的表面积为![]() |
C.正五棱台有7个面 |
D.“![]() ![]() ![]() ![]() |
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解题方法
2 . 若复数
,
,则
的共轭复数在复平面内对应的点位于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26a01253c28a6ea8f590c4cdb3f115a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7741f009666076297f8391657e733a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74819324120f97d4de47125f20098cf4.png)
A.第一象限 | B.第二象限 | C.第三象限 | D.第四象限 |
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解题方法
3 . 已知向量
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a89374e79252c84594ef8d68eca66900.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.9 | B.4 | C.![]() | D.![]() |
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4 . 函数
的最小正周期是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b11f3d32b6bd895b9775226832860d.png)
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5 . 用斜二测画法画三角形
的直观图
,如图所示,已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a633df6d1b15deeab2acd9040c7177.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e20f4b71022249a5444911f124431843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80ff12049bb9ee867712067c6367099f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a836d2dfc31d2bfc949bac8403cf2a4e.png)
A.![]() | B.![]() | C.2 | D.4 |
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6 . 若要得到函数
的图象,只需将函数
的图象( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5fd69da02e485487eaa9e95b676f486.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f2d67fc03f96d484f8b3f9266f6171a.png)
A.向左平移1个单位长度 | B.向右平移![]() |
C.向左平移![]() | D.向左平移2个单位长度 |
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7 . 已知某扇形的半径为
,周长为
,则该扇形的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ec8391bdd39377804ee4dab1d8f1c.png)
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8 . 已知向量
.
(1)若
,求
的值.
(2)设
,向量
与
的夹角为
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5cd28f5401f9c5cee53caf5a14263a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b958a367fa2f08b6202a5a6ebf5e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a603069cf81f5ff7a40bc24e1be8be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
名校
解题方法
9 . 已知一组数据
,
,
,
,
的方差是
,那么另一组数
,
,
,
,
的方差是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b42973c53907f09f2de384c42fc5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ffd5c35bba71ea54c28622b6cf505d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4e76823155f3289e9d09774853f925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07010a3836448070e89edf3a4e31c3a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ffa2daffd2c7a2b8dffb2ff4e349eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d469b85cc7e68fb89ed59a8d01a9d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97e571dbffd95361427974419aff6b3.png)
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10 . 已知
,
,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266ad08c70080e52495117cb8307fd3d.png)
(1)求函数
的值域;
(2)求函数
,
的单调减区间;
(3)若
,
恰有2个零点
,求实数
的取值范围和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35005965ce7f4b9703cba4062b6f3053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3328a5bbf1db60229da59fbee7675e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/266ad08c70080e52495117cb8307fd3d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9b0339e96e32d6fa1a092824850ef8d.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43281072ba152ac733bbd50550ffe1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86251951bb66bd5b40c2fac797f5c074.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/450398974b1561ca801e102e16df6789.png)
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