已知函数
.
(
)求
的值;
(
)求
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f132f51b6b37eed4e3be5596ff90f481.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b87f4ef298bdeebf59a0d850aff72c.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
更新时间:2017-11-12 10:40:40
|
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解答题-问答题
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适中
(0.65)
【推荐1】求函数
.
(1) 求
的周期与值域;
(2)求
在
上的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cce8fbcfb03822c254a95778c754aa5.png)
(1) 求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3aae9c8988f4a48db69cad3308942c9.png)
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解答题-问答题
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适中
(0.65)
【推荐2】已知函数f(x)=Asin(ωx+φ)(A>0,ω>0,
)的部分图象如图所示.
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923308442509312/1923781527101440/STEM/ad7c9a5be7fc451cbde0230b2fcd687e.png?resizew=221)
(1)求
和
的值;
(2)求函数
(
)的单调递减区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3659cbf744e3dea7bd72ccf1159e03c.png)
![](https://img.xkw.com/dksih/QBM/2018/4/13/1923308442509312/1923781527101440/STEM/ad7c9a5be7fc451cbde0230b2fcd687e.png?resizew=221)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
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解答题-问答题
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适中
(0.65)
【推荐3】已知函数
(
为常数).
(1)求
的最小正周期和单调递增区间;
(2)若
在
上有最小值1,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65395e866b3c52a3754d0e64b46f100a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c9aeed3c8c5a04e48d011c607f9142.png)
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】在
中,角
,
,
的对边分别为
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,
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(1)求证:
;
(2)若
,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7812094ec0b468c3e2381658cd056f0.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28956ebf0ebd38adb583b9970f9f8c6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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适中
(0.65)
名校
【推荐2】在△ABC中,角A,B,C的对边分别为a,b,c.已知
,
,
.
(1)求c的值;
(2)求
的值;
(3)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81eedf404aeb0a2310a310910f73d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5978b3692daed80e12a18b5a68ed2d0c.png)
(1)求c的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36042c2008faa19a71f80d58528e51d5.png)
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适中
(0.65)
名校
解题方法
【推荐1】如图,在
中,
,且
,若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfa8cee7d2463f6f7d352e8b65f47cf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5140a040d36ee7c59400f94f74c68b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/583cd6151f70a5c1bc9b04faca9ea673.png)
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![](https://img.xkw.com/dksih/QBM/2020/5/18/2465354928521216/2465593869582336/STEM/fe2c8ffa69d244bf8337fbd5c2d3145f.png?resizew=149)
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解答题-问答题
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适中
(0.65)
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfd22b5d678934b5f1cf535448e7402.png)
(1)求函数
的定义域及最小正周期;
(2)求函数
的单调增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbfd22b5d678934b5f1cf535448e7402.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次