已知函数
,若将
的图像右移
,其相位减少了
,且
为奇函数,则
图像的周期是_______ ﹔其对称中心的坐标为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63609491e4b1253d7991b8664bb61fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8b48711b25cba995e7a23fb10912018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
20-21高三上·浙江宁波·阶段练习 查看更多[4]
浙江省宁波市宁海中学2020-2021学年高三上学期9月第一次模拟数学试题(已下线)第12课时 课后 函数y=Asin(wx+φ)浙江省杭州市学军中学2021-2022学年高三上学期期中数学试题(已下线)第9课时 课后 函数y=Asin(wx+φ)(完成)
更新时间:2020-09-15 08:25:33
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名校
【推荐1】函数
的部分图象如图,下列结论正确的序号是______ .
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/e4696054-ce78-4a99-8f0c-63352f2b179e.png?resizew=234)
①
的最小正周期为6;
②
;
③
的图象的对称中心为
;
④
的一个单调递减区间为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a6927367108dcf8095cc2c7c8ab0fdb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/e4696054-ce78-4a99-8f0c-63352f2b179e.png?resizew=234)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cb80f59040e549eb26fa8325147cfe.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed3e25a26c5cd97ca079c2e95fe64073.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a653044352c5af632de70682525236.png)
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解题方法
【推荐2】有4个命题:①函数
的最小正周期是
;
②在同一坐标系中,函数
与
的图象有三个公共点;
③把函数
的图象向右平移
得到
的图象;
④函数
在
上是减函数.
其中真命题的序号是________ (填上所有真命题的序号).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8e4f5b3c0bc0c9a968e9eec375b66a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
②在同一坐标系中,函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b9643da0c0fea4f099f9a9133d6076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
③把函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a7eca0387b02f09a63220e28766dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8ae071199874d9d74a4919a58902f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c191fdfd08fb94ba6ed45c71f0fbeb.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e9831a7b70e507581a63f6b21b1ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5db0cfe87274a75b460c8a99e72856.png)
其中真命题的序号是
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【推荐1】将函数
的图象向右平移
个单位,所得图象关于原点对称,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18548549b4caf06b6899f6c0e8bf1e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a13dc7f8362a372a773dafe96197d6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
您最近一年使用:0次
填空题-单空题
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适中
(0.65)
【推荐2】已知
,给出以下四个命题:
(1)若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac9282fccd281fe91f8a0802f61c9f7.png)
(2)直线
是函数
图象的一条对称轴
(3)在区间
上函数
是增函数
(4)函数
的图象可由
的图象向右平移
个单位而得到.
其中正确命题的序号为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1cf8cc0ca8fbbc8863fb416e25730f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac9282fccd281fe91f8a0802f61c9f7.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6461468072bd27afd53fd5f9c3bf344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(3)在区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca51c0a6d45c58cf6e1ea5f2813a1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(4)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73955f1685a56d7bf4fc165cf88b1c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
其中正确命题的序号为
您最近一年使用:0次
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【推荐1】有下列四个说法:
①已知向量
,
,若
与
的夹角为钝角,则
;
②若函数
的图像关于直线
对称,则
;
③当
时,函数
有四个零点;
④函数
在
上单调递减,在
上单调递增.
其中正确的是________ (填上所有正确说法的序号)
①已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80d769ab21af5365d3c00dc617375ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91764e19d4a8e0bc0624287b73fb39df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d1eec645764636c0e23b05e8f93234.png)
②若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e28a908a083449f14499fbc58ba6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24db7b603aebdee8e298d1fe49c848e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb52d91a9b9e084e6e4f0aa0a4a1bd96.png)
③当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbc7b35682426aab8bd896a9ce35a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4f2ac7aae8926f5741a7f1b12552a4.png)
④函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1947fd8b1e5fa9096c13256fdb3a23ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4b97703638756a4051a3dd0cdcf5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
其中正确的是
您最近一年使用:0次
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【推荐2】已知函数
的部分图象如图所示,若图象上的三点A,B,C的坐标分别是
,
,
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f369eb7165b1506dd03e46248cf4d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32adbca9bf72535e470c9a6d13c53cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14a04ff9c2fcc02d45521517674c6cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c76b16b7cb0f8af971df501bd46f478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bc7b79076145ea2b02a4a2dda4d2e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/25/0e7e5ab3-4a9a-4811-a2cb-7729d4f119ab.png?resizew=167)
您最近一年使用:0次
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【推荐1】函数
的图象关于直线
对称,它的最小正周期是
,则下列说法正确的是______ .(填序号)
①
的图象过点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefeac0d38a1a529666ebbb9278835a2.png)
②
在
上是减函数
③
的一个对称中心是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a83571e1cbc31c560f83e5f1e6a4b9f.png)
④将
的图象向右平移
个单位长度得到函数
的图象
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b201c26985fd9a85b6228359064c248a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c23a3abb4cbfbf42adceecffb1521958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fefeac0d38a1a529666ebbb9278835a2.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c7c353d4ef44f3f400aed8e47f35658.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a83571e1cbc31c560f83e5f1e6a4b9f.png)
④将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d061d17bbc13e2d61a0c4aee0cb9ced3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/121c7d727fe7147cc7ad21c016f22759.png)
您最近一年使用:0次
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【推荐2】将函数
的图象向右平行移动
个单位长度得到函数
的图象,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29819de1ac989574ff7ad7c4a6540e97.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b67e47bde7c31a183b340ce03a2e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea42cfb22b83929054255a7d42df3433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29819de1ac989574ff7ad7c4a6540e97.png)
您最近一年使用:0次