设向量
,其中
,函数
.(Ⅰ) 求
的最小正周期;(Ⅱ) 若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
,其中
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fc638f4932fa1e90b70960bce8b4f73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f0006306e4a2ff455cd23e0f2d078cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008efc101cee12b3a468c266853422a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45c89d1cb5a4f758539bdda2e31fa94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90f0697ebb651c3a6a265afd7849a290.png)
11-12高三下·浙江台州·阶段练习 查看更多[1]
(已下线)2012届浙江省台州中学高三第二学期第一次统考文科数学
更新时间:2016-12-01 15:55:15
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解题方法
【推荐1】已知函数f(x)=
·cos(x+θ)为奇函数,且
=0,其中a∈R,θ∈(0,π).
(1)求a,θ的值;
(2)若α∈
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(1)求a,θ的值;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882af11e157c24176d51f016e7ea8146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33adb74906403b0b00fcbd9fa691d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/315ef900d87cf6fdc1cc02698697c4ce.png)
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【推荐2】已知函数
,
.
(1)求
的对称中心和最小正周期;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f083217f3a2f6a37b8420b9ed6122f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de2102c706a0d2642add1a9ee037a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
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【推荐3】某市为响应习总书记关于生态文明建设的指示精神,大力开展“青山绿水”工程,造福于民.为此,当地政府决定将一扇形荒地改造成市民休闲中心,如图,扇形OAB的半径为200 m,圆心角∠AOB=
.
![](https://img.xkw.com/dksih/QBM/2021/11/8/2847015695597568/2919162773102592/STEM/8fec9c0d-a997-4583-b2e3-36c668510a0d.png?resizew=336)
(1)如图1,将扇形的内切圆E区域作为市民健身活动场所,其余区域种植各种花草改造为景观绿地,求内切圆的半径r.
(2)如图2,扇形内有一矩形MNOP(边OP在半径OA上,点M在
上)区域为市民健身活动场所,其余区域种植各种花草改造为景观绿地,设∠MOA=
.求市民健身活动场所矩形MNOP面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://img.xkw.com/dksih/QBM/2021/11/8/2847015695597568/2919162773102592/STEM/8fec9c0d-a997-4583-b2e3-36c668510a0d.png?resizew=336)
(1)如图1,将扇形的内切圆E区域作为市民健身活动场所,其余区域种植各种花草改造为景观绿地,求内切圆的半径r.
(2)如图2,扇形内有一矩形MNOP(边OP在半径OA上,点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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【推荐1】已知
,
,在下面3个问题中任选2个问题作答:
①求
的值;
②求
的值;
③求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8edfd235ca2bc1420911415305dd396.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f12ae40e0aed70f95b61ada937d1c4.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64a727271ef080f9476666a30ceb58fb.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
③求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
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【推荐2】设函数
,
.
(1)求
的周期及对称轴方程;
(2)当
时,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560f6b2da4de7ad84f92a7ab551a1210.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46bf0823136425691899149c5580852d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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【推荐1】已知
,
,
.
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(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91091feadf4f7363864fa6d86ab5c00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1bccb23fdf4b0a6a9358755395e44b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb26d5c6867c30860eccbd595872338.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4138f6987cd2ee9e56b2ac80e84f9e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐2】如图,在矩形
中,点
是
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/0b83c9ba-2aac-4d21-9db2-66631e37cb16.png?resizew=133)
(1)若
,点
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的靠近
的三等分点,求
的值;
(2)若
,
,当
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/0b83c9ba-2aac-4d21-9db2-66631e37cb16.png?resizew=133)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce52c76a2ba0752d75b70bb7f3e855dd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
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