已知函数
.
(1)求函数
的最小正周期;
(2)当
时,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08a1360ed8d364726f16af5d6ac55a2d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d3e0fe057bb893461206c019547c76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
更新时间:2020-02-15 22:25:13
|
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解答题-问答题
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适中
(0.65)
【推荐1】已知函数
(
).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/25ccd79f-0fd2-4d85-b94f-3ed73cbfe7a3.png?resizew=193)
(I)若
,求函数的单调减区间和图象的对称轴.
(Ⅱ)函数的图象上有如图所示的A、B、C三点,且满足
,求函数在
上的最小值并求此时x的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec24f851b50c2112e6ce2212a2efe2d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/25ccd79f-0fd2-4d85-b94f-3ed73cbfe7a3.png?resizew=193)
(I)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/995dd03b848d16fc537e9f5336a28be6.png)
(Ⅱ)函数的图象上有如图所示的A、B、C三点,且满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e893a8ce9a5979dbc8d5d01f22b470.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb4ece961b6d4e1d95b2ef0bdbe4375.png)
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适中
(0.65)
【推荐2】已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210274e57cc0487a58b99ea274b8aa1.png)
(1)求
的周期及单调增区间;
(2)若
时,求
的最大值与最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7ac529db355de5d6f84b66ab748dfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3210274e57cc0487a58b99ea274b8aa1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3aa5de820e783a1c5f7d083f9edea12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在
中,角
所对的边分别为
,且满足
.
(1)求角
的大小;
(2)求
的取值范围.
![](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/0a199e71c65e65b4dbd826f329243af1.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ce0582b8a329aa298ed479517529d7.png)
您最近一年使用:0次
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适中
(0.65)
解题方法
【推荐2】如图所示,在四边形
中,
,
,
,
,
,点
为四边形
的外接圆劣弧
(不含端点
,
)上一动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/77dc3669-b556-4f5a-bfd4-5d7e44723f9e.png?resizew=142)
(Ⅰ)判断
的形状,并证明;
(Ⅱ)若
,设
,
,求函数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954d2fd2aecd31ff67d975bc8981023a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f028b10ae7e2a83316c077cdccd6ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc2f5f6d9efe3852a2329ea927abcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/77dc3669-b556-4f5a-bfd4-5d7e44723f9e.png?resizew=142)
(Ⅰ)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272c5e2a28daff5a36abd64267fcaa5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9ab5a9114daaa0fd3f6c5f1885f90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038bd8c95ff3649e957b67036207fbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/794f2c6bd63355105d179d11306a9cae.png)
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适中
(0.65)
名校
【推荐3】已知函数
.
(1)求函数
在
的值域;
(2)将函数
的图象上的每个点的横坐标都变为原来的
倍,纵坐标不变,得到函数
的图象,若函数
在
上没有最值,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54303c27f0fd032200a16af6c80efffe.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c51332c979e0dcd3bc5c9ae69e0c1755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
(2)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8dbc6614da1ef7bbe24166f60d797c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe386ad25a4c1cce633ed4e129127047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
您最近一年使用:0次