已知向量
,
.
(1)若
,且
,求x的值;
(2)若函数
,求函数
的最小正周期和单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36aac6207edf81cb9225dc6baac2fc2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c004f07011d792730bda394092d94411.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1afa49dbaa99a0d7a7a6d18b3fe42091.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e10dce73bdc1d522ae7cb34805ed3d8.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9d2741a32392aeff6b3e87381761e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2022-11-17 10:55:39
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】已知
,函数
.
(1)求函数
的最小正周期及单调递减区间;
(2)已知锐角
的内角
的对边分别为
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820910ee58c396ce98f8dba2e8f3c531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a0df8518313424dfcff231d430336d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知锐角
![](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/ab840b1a44c8ad9187d5a382b52a1a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52fbf49ce1fa8f3405c0020f0d2af968.png)
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【推荐2】如图①,筒车是我国古代发明的一种水利灌溉工具,因其经济又环保,至今在农业生产中仍得到使用.如图②,一个筒车按照逆时针方向旋转,筒车上的某个盛水筒
到水面的距离为
(单位:
)(
在水下则
为负数),
与时间
(单位:
)之间的关系是
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/7a252386-beae-4530-b547-284c7e5d60e1.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/751d0232-829a-40f5-be0b-211fed46abc0.png?resizew=169)
(1)盛水筒
旋转一周需要多少秒?盛水筒
出水后至少经过多少秒就可以达到最高点;
(2)当
时,判断盛水筒
的运动状态(处于向上运动状态、处于向下的运动状态),并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65502a7ea4d1ce6d6d8c720845c73e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee47827f33c511d7f8f8b24694732d57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/7a252386-beae-4530-b547-284c7e5d60e1.png?resizew=144)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/751d0232-829a-40f5-be0b-211fed46abc0.png?resizew=169)
(1)盛水筒
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9533cdbee15af454832f8c1e7cca55fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
【推荐1】在锐角
中,
三内角所对的边分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2132c575dc0b845dcea96da2ff819ce.png)
.
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a504b0490c9a9fdb2eed1fb93b73f.png)
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3470f8e8142a61cfd3d4aa1e1e203d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7132c2d8b2ff504e6c2ba36c4f6dcfaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2132c575dc0b845dcea96da2ff819ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802a504b0490c9a9fdb2eed1fb93b73f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052eb57d83181988130a458d21b3950f.png)
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解答题-问答题
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名校
解题方法
【推荐2】在
中,角A,B,C所对的边分别为a,b,c,且满足
.
(1)求B;
(2)若
为锐角三角形,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cc498c5c33b19d73362ce3672fb96d.png)
(1)求B;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1e4d93d6487777af953af02c1be6f91.png)
您最近一年使用:0次
解答题-问答题
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名校
解题方法
【推荐1】已知
,
,
,
(1)若
求k的值;
(2)若
,
且
三点共线, 求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6058a2d06b42c223208e37b901b7ff9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32cde768af0b6520211805e04decb739.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f285ad5297024d818b2caa14376b7bf4.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c6507de8d14dafb57bf4eda6397d1d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc15fdc5b917edc6f21dad1004fa24ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b206ca6aae394ab845aea1e8aea496b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
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名校
解题方法
【推荐2】已知
,
,
,
,(
,
).
(1)若
,且
∥(
),求
的值;
(2)是否存在实数
,使
,若存在,求出
的取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9dbb1dcf34ce85b682bc5fbfc85162d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18057495029046ad0a4a2b40acacad35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc277042c1f46f53710717f9f74f7c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73f33587252047afa9577c183a8a9261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedd50c3697d7653e26bc844f930dad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af89864f1c909eef31ebbe3178c048a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5bd6b28ea874f4fc891e6ed58e41d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
【推荐3】在平面直角坐标系中,O为坐标原点,已知向量
,又点
,
,
,
.
(1)若
,且
,求向量
;
(2)若向量
与向量
共线,求常数
,
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91cb3fd10338ed722631af7e9eb03378.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e8fd1ce0df99890a2147191d6fe8961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e4987e9bbb496ab420bb4e1aa6a416.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/179830ebf9101abb02c40f82080a0237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388d3d213a231cccf854a29eef611d01.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752ccaaadc138d002cfbe31b3390031d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a757261e892755bf9e0d86111331127c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5773af927ab0caa208eef1adf9e87aee.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862d9d1905d601dd9d19f58027a741e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0266e0e890fb1b84be352fdc65bb298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3776560a01c23cfe01975e4aec5e278d.png)
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【推荐1】如图,是函数
的图象的一部分
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/6c113d7c-af79-4318-a5ea-9936e76381f2.png?resizew=121)
(1)求
的解析式和单调递增区间;
(2)若将函数
图象上所有点的横坐标伸长到原来的
倍(纵坐标不变),再向右平移
个单位长度,再将函数图象上所有点的纵坐标缩短到原来的
(横坐标不变),得到函数
的图象,求函数
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc9a38e1b2734e89d39947a28999e1e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/6c113d7c-af79-4318-a5ea-9936e76381f2.png?resizew=121)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9dab7074b159ba8e5997a470a9e3793.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b172723002461ae60798317e2f10f6c2.png)
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解答题-计算题
|
适中
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名校
解题方法
【推荐2】已知函数
.
(Ⅰ)化简
的表达式并求函数的周期;
(Ⅱ)当
时,若函数
在
时取得最大值,求
的值;
(Ⅲ)在(Ⅱ)的条件下,将函数
图象上各点的横坐标扩大到原来的2倍,纵坐标不变,得到函数
的图象,求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c479274aefa7e0123c941a2cb99e06.png)
(Ⅰ)化简
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71689ad3d87f3e52e0e9dff01b86a716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db7b603aebdee8e298d1fe49c848e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
(Ⅲ)在(Ⅱ)的条件下,将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd330acca8e17f5ff9aca1f0f312df50.png)
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解答题-问答题
|
适中
(0.65)
【推荐3】函数
的最小正周期是
,且当
时,
取得最大值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求函数
的解析式及单调递增区间;
(2)存在
,使得
成立,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b7df71f80eb435ef518736dc481453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9895bf4192f5c55c16f8270d53c49b13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31aba8ca22579a6d5eed632aecff4548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4695e7ce5d4fbedb2ba790f70af0224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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