20-21高一·江苏·课后作业
1 . 求函数
的周期.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9f45462f454e0d7fb7f91ff13876a16.png)
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20-21高一·江苏·课后作业
2 . 求下列函数的周期:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7cd93b34f15e13f2308a8c3ebf3d99.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab0f41c501de20ff09565e0459d7644.png)
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名校
3 . 已知函数
的最小正周期为
.
(1)求
的值并计算
的值;
(2)若
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff2b56392dc858ef11f2011116ba226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee7b91b443bf1dd19dc45aa890376c61.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb92995c95e2128737e716ef8a0e9430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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4 . 已知函数
.
(Ⅰ)求函数
的最小正周期及对称轴方程;
(Ⅱ)将函数
的图象向左平移
个单位,再将所得图象上各点的纵坐标不变、横坐标伸长为原来的2倍,得到函数
的图象,求
在
上的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeedab6d305b361a62ea80275a39012a.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdaf49f9611922348aa2784465da614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1613d377a07850c72cbec354b7a3000f.png)
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5 . 已知函数
,且
,
.
(1)求该函数的最小正周期及对称中心坐标;
(2)若方程
的根为
,
且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a3672148617df7d6f94da2363af1a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/386db31213b5988c1948f87c7f96f7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aa7cc80d44c3f0c7fe26c8b6e072d14.png)
(1)求该函数的最小正周期及对称中心坐标;
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/752435e6180da6f0d34e8b65fd012e53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee29a66a8fde18d0c85d064d0952c16b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67b0f96ab157c60e6d5f36e14922bf1.png)
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2019高三·全国·专题练习
6 . 求下列三角函数的周期:
(1)y=3sin x,x∈R; (2)y=cos 2x,x∈R;
(3)y=sin
,x∈R; (4)y=|cos x|,x∈R.
(1)y=3sin x,x∈R; (2)y=cos 2x,x∈R;
(3)y=sin
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58399b14574d2dca4322a870e5d251fd.png)
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2019高三·全国·专题练习
7 . 已知函数y=cos
.
(1)求函数的最小正周期.
(2)求函数的对称轴及对称中心.
(3)求函数的单调增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b00579538bdda068f25a6855e75251.png)
(1)求函数的最小正周期.
(2)求函数的对称轴及对称中心.
(3)求函数的单调增区间.
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名校
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b4ebb7dd115f681c9234c9e3f1c5.png)
(1)求
最小正周期;单调增区间
(2)求
在区间
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b4ebb7dd115f681c9234c9e3f1c5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6bfdb24ecf5da863405c2b40936ff9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c66ff52200beb1d153b92f699997feae.png)
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名校
9 . 已知函数
,
.
Ⅰ.求函数
的最小正周期和单调递增区间;
Ⅱ.当
时,方程
恰有两个不同的实数根,求实数
的取值范围;
Ⅲ.将函数
的图象向右平移
个单位后所得函数
的图象关于原点中心对称,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9209cd31cb8defcf0391937c187ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
Ⅰ.求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
Ⅱ.当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d3e0fe057bb893461206c019547c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb101c5df08aa35ae24a6416840b199b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
Ⅲ.将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9209cd31cb8defcf0391937c187ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93a232c88870d213a7b74a796a1ff4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2018-10-09更新
|
2112次组卷
|
5卷引用:河北省冀州市中学2017-2018学年高一上学期期中考试数学(理)试题
解题方法
10 . 设函数
(1)求
的最小正周期,并指出由
的图象如何变换得到函数
的图象;
(2)
中角
的所对边为
,若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff15f207400333485af8adb89786883f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e960ab40ee6533d55c4eb3303bb4c0.png)
(2)
![](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/d39479a0f3c0fa1b019d22c773844ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ad61e85db7c78a2731d1b8e0b38fc05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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