解题方法
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6874df6a7fe17637df3f4fe37b03529.png)
(1)求
的最小正周期和单调递增区间;
(2)若函数
为偶函数,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6874df6a7fe17637df3f4fe37b03529.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4eb86d2e8aa6e39ad710f7b8d74415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8d40e257f9c446b8e30fa841b74bbd.png)
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2 . 已知
为原点,点
,
的坐标分别为
,
,其中常数
,点
在线段
上,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20980070432381fbaa224cc1af76ce37.png)
,则
的最大值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1f08e04cf0b6a9afea66ce590ba00b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e1f6cf8990c217af7e109120f35cc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20980070432381fbaa224cc1af76ce37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b68d5d7c63dfd11dd8f72b864f9bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa30ed741a392705561e242d1f47c05.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
3 . 已知
,
均为锐角,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
_____ ,
=_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161d6753fe7fd47dc42d2e47510ad2f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc903c19f7b3b0aa58cdb0cdb7b062a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eacde1c42151734fdc60f3001b590de.png)
您最近一年使用:0次
4 . 函数
的图象是轴对称图形,其中它的一条对称轴可以是
![](https://img.xkw.com/dksih/QBM/2016/12/2/1573191406641152/1573191412785152/STEM/ec9ad0a4036245b6921936223b0754b6.png)
A.![]() |
B.直线![]() |
C.直线![]() |
D.直线![]() |
您最近一年使用:0次
5 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b5fc6ad37ea54a52441d59027cc199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f67b85005c39627e53cadac78ceef03c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21b5fc6ad37ea54a52441d59027cc199.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知平行四边形
中,
, 则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c62bf7d64a9b8e5028fffe216e6cb460.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa2abc852338af84ee759178db24bd51.png)
您最近一年使用:0次
7 . 下列四个函数:
,
,
,
,以
为周期,在
上单调递减且为偶函数的是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443f55ba04dee5f6fc63a8d650b8bd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ccd2a9e4b1ed105347e86fc933c345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c1523c59ef99d2761a8659d43f3854.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7af0cfe917f4022b536d83d6e05358cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d5adfe85535b699655d5ed2f3322d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7806d68c8fde08cdaedc02968b8f33.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 已知函数
,则
的最小正周期![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23cb763b3517a6204a9e9eb1d6163553.png)
_______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307efe4ef04e645493577d2a22678d01.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d8f559565b58b0d9e19e868e970382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23cb763b3517a6204a9e9eb1d6163553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307efe4ef04e645493577d2a22678d01.png)
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9 . 若函数
是偶函数,则实数
的值为_______ ;单调增区间为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a159cd6cd7bc69fbe45ffb852e19880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 在
中,
,
,设
交于点
,且
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af4cb6ae73125fb2f60e25aea935c5bf.png)
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddb3850433cc01d82059a66f5e8bc4e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bbe24ec76637172b209b84f59195686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ca4c94b0eca19242a0de1005dda885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7525097e18f5354125282528088574c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af4cb6ae73125fb2f60e25aea935c5bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f29c54468c6c27f35feefea1a38aecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
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