设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf2444fc3ae5828d9aa9d5bf0c8a295.png)
(1)当
时,求
的值域;
(2)已知
中,角A,B,C的对边分别为a,b,c,若
,
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf2444fc3ae5828d9aa9d5bf0c8a295.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/648b52be5311ea3f6f13feeb812d8eac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2020-04-30 06:19:09
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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】在锐角
中,角
所对的边分别为
,已知向量
,
,且
.
(1)求角
的大小;
(2)若
,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/a353f82b079a06e32318470cf15143d8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2758285d3c1d8c16784edbc5f572fc26.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f50bd68839a27fde5be2081830e3e8.png)
(1)求
的最小正周期;
(2)若
的图象关于点
对称,且
,求t的值
(3)当
时,不等式
恒成立,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f50bd68839a27fde5be2081830e3e8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcf1033268162269621ba305cff71095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b2b096238bd6eac8cd1ab2c4348fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f5cb87d1c2835448267c49b0b6e4ea.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c30f38d27bace6bee0d62967a0714563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab66dbadf24162e3db57849591073717.png)
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适中
(0.65)
解题方法
【推荐1】
的三个内角
,
,
的对边分别为
,
,
且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09dfeb014e911b9570cf7bee7d94e9f2.png)
(1)求
;
(2)若
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,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/09dfeb014e911b9570cf7bee7d94e9f2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8653af649d2a1b22f50c8529ef43136d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
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适中
(0.65)
【推荐2】在
中,内角
所对的边分别为
的平分线与边
交于点
,且
.
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017352169046016/3019701422522368/STEM/efc66a4750ec4c30b7825d0345fd9c33.png?resizew=216)
(1)证明:
.
(2)若
,求
的面积.
![](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/4a665159bc251e28818d7c1c9f8adc26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://img.xkw.com/dksih/QBM/2022/7/7/3017352169046016/3019701422522368/STEM/efc66a4750ec4c30b7825d0345fd9c33.png?resizew=216)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a738d42fc188f74ac5ed19977ddd2a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec69d92eb0fbbd6061f612fffe6eb76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
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名校
解题方法
【推荐1】已知
中,角A,B,C的对边分别是a,b,c,且
.
(1)求
的值;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a7a00c8e8893e7d958369705d4852e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eded20bdd80dad6efd129c60d1a61dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】在
中,内角A,B,C所对的边分别是a,b,c, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5a716c7861aa992448befdb6bb30a6.png)
(1)求A
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5a716c7861aa992448befdb6bb30a6.png)
(1)求A
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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适中
(0.65)
【推荐1】已知函数
的最大值为
.
(1)求
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(2)已知正实数
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,使得
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ca929c7ea8e6e93a4164a7c9cdd44c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
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【推荐2】已知关于x的不等式
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ef28bd0bef45b9373502007fd94cb6.png)
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