题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044939-46352.png)
(1)求函数
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044939-65854.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044939-44662.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044939-15102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-82940.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-21607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-98202.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-69177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-61350.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-57347.png)
解析
(1)将
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044939-46352.png)
(2)根据第一问,而得到
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-85462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-82186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-82734.png)
解:(1)由
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-71662.png)
………………………………………………..5分
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-14035.png)
,最小正周期
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-99330.png)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-85462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-16258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-25758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-78952.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044940-82186.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-82734.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044941-34834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044942-55003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044942-43995.png)
…………………………………………………...14分
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044933-83315.png)
A.![]() | B.![]() | C.![]() | D.![]() |
已知:△ABC中角A、B、C所对的边分别为
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044925-41444.png)
且
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044926-73564.png)
(1)求角C的大小;
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044926-65130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044926-15867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044926-49599.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044923-20492.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044923-76872.png)
A.135° | B.90° | C.45°或135° | D.30° |
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044920-96888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044920-65280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044916-75963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191020/20191020044917-61504.png)
A.2 | B. 1 | C.0 | D.无法确定 |
最新试题
- 1如图所示,三相交流的电压为220V,负载是不对称的纯电阻,RA=RB=22Ω,RC=27.5Ω,按星型连接.试求中线电流
- 2在我国现阶段,发展非公有制经济不会改变我国的社会主义性质。从哲学角度看,这是因为[ ]A.主要矛盾决定着事物的发
- 3甲球带正电,把它分别靠近用细绳悬挂的小球乙和丙,发现甲、乙相斥,甲丙相吸,则下列正确的说法是 [ ]A.乙一定带
- 4Come _____ Xin Hua book store and see _____ yourself. [
- 5甲、乙两种固体的溶解度曲线如图所示,下列说法中,正确的是( )A.20℃时,甲溶液中溶质的质量分数一定大于乙溶液B.4
- 6【题文】仿写。结合所给语境,在横线处填入适当的语句,组成语义连贯的排比句。(4分)让我怎样感谢你,当我走向你的时候,我原
- 72010年3月28日13时30分,华晋焦煤有限责任公司投资开发的________煤矿发生透水事故,事故发生时有 15
- 8计算:
- 9已知向量(1)当时,求的值;(2)设函数,求的单调增区间;(3)已知在锐角中,分别为角的对边,,对于(2)中的函数,求的
- 10(15分)某化学兴趣小组利用以下各装置连接成一整套装置,探究氯气与氨气之间的反应.其中D为纯净干燥的氯气与纯净干燥氨气反
热门考点
- 1某同学将一瓶矿泉水放到冰箱里结成了冰.关于冰和水的质量,下列说法中正确的是( )A.矿泉水瓶已经鼓出来了,质量一定变大
- 22.3+173+6+1.7+43+3.
- 3—________ is it from your home to school? —Three miles. [
- 4如图所示电路,电源电压保持不变,开关S闭合后,将滑动变阻器滑片P向右端滑动时,电压表V1读数 ,电压表V2读
- 5下列属于动物的学习行为的是( )A.鸟类孵卵B.鹦鹉学舌C.蜜蜂筑巢D.蜘蛛结网
- 6从温度带上看,黄土高原以___________带为主,农作物耕作制度是___________。
- 7戊戌变法期间建立的京师大学堂在其规条中规定:“五经四书如日月经天江河行地,历万古而常新,又如布帛菽粟不可一日离,学者果能
- 8有铁、盐酸、烧碱溶液和硫酸铜溶液四种物质.根据要求写出由上述四种物质作为反应物的化学方程式各一例:(1)反应前后溶液总质
- 9小题1:4月23日,是《堂·吉诃德》作者(西班牙) 和《哈姆雷特》作者(英国) 的辞世纪念日。1
- 10给下面的加粗字注音。刿( ) 帛( ) 小信未孚( ) 又何间焉( )轼( ) 靡( )