题目
题型:解答题难度:一般来源:不详
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035541-91084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035541-32359.png)
(1)写出函数
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035541-58720.png)
(2)若x
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-35622.png)
(3)若不等式
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-69554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-29300.png)
(2)即
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-61277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-57751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-47971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-39706.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-94839.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-76271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-90359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-41042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-69554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-31413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-98711.png)
解:(1)由已知得
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-12713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-91630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-74352.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035546-90556.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035546-11006.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035546-46759.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035546-58416.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035546-64204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035547-14431.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035547-11958.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035547-60646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035547-42392.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-12713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035548-79655.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-29300.png)
…… 4分
(2)由(1)知
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-76271.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035548-80859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035548-33477.png)
故当
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035548-12015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-61277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-57751.png)
当
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035549-39579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-47971.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035543-39706.png)
(3)解法1
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035548-80859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-69554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035549-87380.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-63903.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-31413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035545-98711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-94839.png)
解法2:
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035542-69554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035549-37637.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035549-99134.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035550-16680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035550-88915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035544-94839.png)
核心考点
试题【已知向量设函数; (1)写出函数的单调递增区间;(2)若x求函数的最值及对应的x的值;(3)若不等式在x恒成立,求实数m的取值范围.】;主要考察你对正弦函数的图象与性质等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035455-16234.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035455-51129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035455-56232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-27751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-19183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-61608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-53779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-59072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-20388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-41694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-53779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-36602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-90711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-41694.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-53779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-36602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035458-99656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035456-53779.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035457-41694.png)
A.①③④ | B.①③ | C.②③④ | D.①②③ |
A.2 | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035450-13707.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035442-72406.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035442-67860.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035442-63197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035442-67672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035443-53541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035437-79546.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035437-88253.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035438-75627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035438-25376.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035438-64767.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035438-24358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035438-74934.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035429-45419.png)
(Ⅰ) 该函数的图象可由
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035429-53932.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035429-73863.png)
(Ⅱ)若f (θ)=
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035429-23120.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035429-41365.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190911/20190911035430-14456.png)
最新试题
- 1日常生活中的下列做法错误的是( )A.用活性炭除去冰箱内的异味B.用食醋除去水壶中的水垢C.将燃气热水器安装在浴室里D
- 2近日,江苏丹阳葛城的考古工作取得重大突破,出土的大量珍贵文物证明春秋时期这一地区属吴国管辖。这一重大考古发现可以佐证西周
- 3设函数f(x)=x3cosx+1.若f(a)=11,则f(-a)= .
- 4地球上的生命丰富多彩,人类是自然界的一部分,我们对待地球上的其他生命的正确态度是 [ ]A.关爱呵护地球上的其他
- 5鞍山玉佛驰名中外,它的主要成份是富镁硅酸盐[化学式为Mg6Si4O10(OH)8)。下列有关说法正确的是A.鞍山玉佛是一
- 6已知三角锥形分子E和直线形分子G反应,生成两种直线形分子L和M(组成E、G、L、M分子的元素原子序数均小于10)如下图,
- 7关于力的下列各种说法中,正确的是( )①力是改变物体的运动状态的原因②力是产生形变的原因③只有相互接触的物体才有力的作
- 8.In recent years, Chinese traditional culture ______________
- 9下列说法正确的是( )A.14与-0.25互为倒数B.15与-5互为倒数C.0的倒数为0D.-4和-0.25互为倒数
- 10化简: 。
热门考点
- 1一列横波在t=0时刻的波形如图,传播方向沿x轴正方向,已知在0.9s末,P点恰好出现第3次波谷,则从零时刻算起,经过多长
- 2下列对检验方法或现象描述不正确的是( )A.乙烷中是否混有乙烯,可用通过溴水是否褪色进行检验B.乙醇中是否混有水,可用
- 3班超派甘英出使大秦最远到达[ ]A.大秦 B.波斯湾 C.大宛 D.波罗的海
- 4有关农耕区畜牧业和牧区畜牧业的叙述,正确的是 ( )A.牧区拥有广阔的天然草场,适宜放牧牛、马、羊等多种牲畜B
- 5如图 (甲)所示,在水平绝缘的桌面上,一个用电阻丝构成的闭合矩形线框置于匀强磁场中,线框平面与磁场垂直,磁感应强度B随时
- 6如m1所示,是小明同学做“观察水沸腾”的实验装置.(1)本实验的目的是:观察沸腾现象;探究水沸腾时______的变化规律
- 7(本小题满分12分)已知函数 且满足。(1)求实数的值;(2)若,判别的符号且说明理由;(3)当时,关于的方程有实数解,
- 8【题文】读世界某地区域图,回答下列问题。【小题1】关于图中地区的三条河流,下列说法正确的是(
- 9下列说法正确的是 ( )A.表面张力就是分子力B.水面托起缝衣针表明表面张力与缝衣针的重力相平衡C.液体表面好像
- 10有一组数据,按从小到大的顺序排列为13,14,19,x,23,27,28,31,其中位数是22,则x等于( )A.23