名校
解题方法
1 . 已知
的展开式中第5项与第7项的二项式系数相等,且展开式的各项系数之和为1024,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea163cfc46cf596ff7af2fcb57fdd19.png)
A.![]() | B.展开式中奇数项的二项式系数和为256 |
C.展开式中第6项的系数最大 | D.展开式中第8项为常数项 |
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名校
解题方法
2 . 平面向量
满足
,
且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff0812ea92afd60233426521798f5ca7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a51972870a6b810013ec2a20217eeba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7021015c1d6865d8e5002ee38ca0e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
A.3 | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知函数
.
(1)求函数
在区间
的最大值和最小值;
(2)
的内角
所对的边分别为
,且
,
,延长
至点
,使得
,若
,求
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6724dbbc8c4ce68ce2b1079d2b4481a4.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02e6e821af7945ac1ed0096a238721f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dbfff6cc395cdc163fc751c954cab7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514545071170611d980e1e557ad19716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ac32ac8139f652e9ee77cb6ee0f0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
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名校
解题方法
4 . 已知向量
,且若
,则
与
的夹角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb30f4146933d707b317048a48d320a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3045ffd8dde1dfa31ee89bf09d4b5e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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名校
解题方法
5 . 如图,在
中,
为线段
上靠近点
的三等分点,
是线段
上一点,过点
的直线与边
分别交于点
,设
,
.
,
,求
的值;
(2)若点
为线段
的中点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e4425dc7c346e4597c0521d7f636174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3605b320cae7b4a85aa273dfb7e606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441809d6ce2df21a85b390cdce9b1112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4641863be921b55a26e52cfb01e7bfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52666519aa3622e65c157f072d3f8c34.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaac97efa5492fc72fb0f773f0c4861.png)
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6 . 记函数
的最小正周期为
,且
,将
的图象向右平移
个单位,所得图象关于
轴对称,则
的值可以是______ (写出符合条件的一个具体数值即可).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14256d339bbe06829127efe068de3a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eec55bee2f2507a999964484cece7d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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7 . 在复平面内,复数
对应点
,复数
对应点
,下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b49dec6fc3d7e661679c3723cb109da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abc6b4cf6797e59f783ddf40030a34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.![]() | B.![]() |
C.向量![]() | D.![]() |
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8 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b334d6f69490ffc4946c634c4f2fe396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66e7cd4e866f7e0e38c51a799b087ace.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 如图,矩形
中,
,
,点
为
的中点,且
.
和
表示
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6243d40e5118c4a89c62d00985b7a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3d8ff97d32fbea1dcef672e563be4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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10 . 已知向量
,
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5463fb0b7d03747aa4d680620ca81be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159cb6971f298f8b53afb579b35bfba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f8bf2242da17216b75e0fd3d549259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.2 | B.4 | C.6 | D.8 |
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