解题方法
1 . 设
的内角
所对边的长分别是
,且
为
边上的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858850da3c7cf2285208d36cfc110036.png)
______ .
![](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/3b406b1280d6fd8e9c7ef93a5a542936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446179a39e9fd38ff2a4601ea38378a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858850da3c7cf2285208d36cfc110036.png)
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2 . 已知实数
,
满足约束条件
,则
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec4e1cf43e995d73b576a69060ecf13a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a28635f65cd00e53e16a0f0715919abd.png)
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3 . 已知
的内角
所对的边分别为
,且
的外接圆半径
,则
面积的最大值为______ .
![](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/9f6c83e09992a6fb70995fac24102472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c572083c2af625b8222e19a53a5d43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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7日内更新
|
332次组卷
|
2卷引用:陕西省西安市第一中学2024届高三下学期高考预测数学(文科)试题
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4 . 早在西元前6世纪,毕达哥拉斯学派已经知道算术中项,几何中项以及调和中项,毕达哥拉斯学派哲学家阿契塔在《论音乐》中定义了上述三类中项,其中算术中项,几何中项的定义与今天大致相同.若
,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c0a41e2a5aaf613e467c55837183e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c2c9c964455e60490cbed197380fc4.png)
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5 . 设
是等比数列
的前
项和,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130aab74cff7810ad14ac2480ff5b929.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c705ed1d40eb3d40ebadd05dbb645b73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc737fd79335e429f265108d8dd2504c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/130aab74cff7810ad14ac2480ff5b929.png)
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解题方法
6 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d10ddee788df7cb735a6c1bbd4b07c.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45373166e0a004b3b4d910655d409b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d10ddee788df7cb735a6c1bbd4b07c.png)
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7日内更新
|
69次组卷
|
2卷引用:四川省成都市第七中学2024届高三下学期热身考试数学(文)试卷
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7 . 在
中,AP平分
,AP交BC于P,BQ平分
,BQ交CA于Q,
,且
,则
的度数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b5259b4dd7bc3082899e4f47839482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
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解题方法
8 . 在
中,内角A,B,C的对边分别为a,b,c,且
,
,则
面积的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39900a2d790732077ffb571427a134fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6647dc2d9bd269460644bb2103118d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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9 . 若数集
的子集满足:至少含有2个元素,且任意两个元素之差的绝对值大于1,则称该子集为数集
的超子集.已知集合,记
,记
的超子集的个数为
,当
的超子集个数为221个时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f28611f423195f2afe782c91c4dcd14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cfeacc29e6a61c5b3b4e439c0a91df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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解题方法
10 . 在
,已知
,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81909302bf63ddf0fa518315f16b5fc.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5042f35f91baff31c50cf9ec14a08c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e9019487563439986e1106739c4845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81909302bf63ddf0fa518315f16b5fc.png)
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