已知函数
.
(1)求函数
的单调递增区间;
(2)将函数
的图象向右平移
个单位后得到
的图象,求
在区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb18bf398fcc3f12f1d7dd7b23cc79bd.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fee19fef930b81f2605c4642b6211c.png)
更新时间:2022-03-01 13:29:27
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解答题-问答题
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【推荐1】已知向量
,
,函数
.
(1)求函数
的单调递增区间;
(2)求函数
在
上的最大值和最小值以及对应的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351dd075c1f7a1087f3e97d9394161a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2f72db417c585630d355a2f82c0c793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7aa1233d7a93113281594c41f25c7db.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29b2fe1c8d401ecc5444b26def15741.png)
(1)求
的最小正周期和值域;
(2)在
中,角
所对的边分别是
,若
且
,试判断
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29b2fe1c8d401ecc5444b26def15741.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/a9954727b5c7977c5282489c701e87d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a99bb77a5ec8629e26b0329a8a21db2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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【推荐3】已知向量
,
,
.
(1)求函数的最小正周期
及单调递增区间;
(2)若
,求函数
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04a65c46a1383c35b4cda050249c2f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ab134fc0c2bcf40d3d202479a587393.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74195b63f4273be34ba399556305d555.png)
(1)求函数的最小正周期
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd65d7c5e979706d391163aee2c18cb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解题方法
【推荐1】已知函数
.
(1)若先将函数
图象上所有点的横坐标缩短到原来的
倍(纵坐标不变),再将之向左平移
个单位,得到函数
图象,求函数
的解析式
(2)设
,则是否存在实数
,满足对于任意
,都存在
,使得
成立?如果存在,请求出实数
的取值范围;若不存在,请说明你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee24f1842a68b15b50b371c858b226fc.png)
(1)若先将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe0e9ee62f5b9c11cb646f6ec5d2592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b155f5cb2c9dd78d9a272619af64597b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c2163d9e9d9d90e4b04fa1b4f316ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐2】已知函数
.
在
上的图象;
(2)将
的图象横坐标扩大为原来的2倍,再向左平移
个单位后,得到
的图象,求
的对称中心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54224b6cf4740eb1e482055744689615.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1613d377a07850c72cbec354b7a3000f.png)
x | 0 | |||||
1 | 0 |
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
您最近一年使用:0次
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【推荐1】设函数
.
(1)若
,求函数
的值域;
(2) 设
为
的三个内角,若
,
,求
的值
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/9c4eed4da3be46d7a4d6032051ef8c39.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/224719645aa541fd856c8b99c2a8bcc3.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/4d7a28e241994b419b015fa755a8163b.png)
(2) 设
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/172faecc5aea4d4499cd022d71a4dadd.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/5909eb00632b47e5b7af0c80dbf6fcfc.png)
![](https://img.xkw.com/dksih/QBM/2014/6/24/1571794857263104/1571794863071232/STEM/2b0a7b2cc99e484fa35f9b8e883d0a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5e36ded8549fd4f812473cec749f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
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解题方法
【推荐2】在
中,角A,B,C的对边分别是a,b,c,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e41e7cd5514d3ac0e7adc537882317.png)
(1)求角A的大小;
(2)若
,求中线AD长的最大值(点D是边BC中点).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e41e7cd5514d3ac0e7adc537882317.png)
(1)求角A的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
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【推荐1】已知函数
,在同一周期内,当
时,
取得最大值3;当
时,
取得最小值-3.
(1)求函数
的单调递减区间.
(2)若
时,函数
有两个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28acac69fd7b7aed9e61b900e5ca6975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720091d877ca5e2837b0f410fb99631d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b283eb08db6f602ede1ae542c5e3662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0c247f2c800689d4480b839c4f25667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d4b908094e3a156e1925f3c98c4c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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解题方法
【推荐2】已知函数
.
(1)求函数
的单调递增区间;
(2)设函数
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31743c32920ce35653edbe11d1587ed3.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd2c5760181b2c974811564b55b65f4.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3ba381cb975af3db10bf67d85b28ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
您最近一年使用:0次
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【推荐3】已知向量
,
,
.
(1)求函数
的单调递增区间和最小正周期;
(2)若当
时,关于
的不等式
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27bf95c02a618a14db2b305ad85ee42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b559bce87525c11e9f432cedc68a403c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae9f908aabcd9d9c46a0ecdfd1d6c12.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b63a87545fb8a1913ad16e376d42bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab073a433caf95e4c6ce6813cdfbe430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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