![](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/95d37b2f8d5da8eaa07442b941017c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
更新时间:2023-03-30 08:33:12
|
相似题推荐
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】计算
的结果为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0939117cb6eec72fe0351a13caa7bc80.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
【推荐2】给出下列四个命题:
①半径为2,圆心角的弧度数为
的扇形面积为![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/8cec4de4fe2b4b5d9f431510dca25087.png?resizew=12)
②若
为锐角,
,则![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/279194265042495f9978a8d2d4188d8b.png?resizew=118)
③函数
的一条对称轴是![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/084d70afa18648c0bf9da4b42c0d3f86.png?resizew=49)
④已知
,
,则![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/8e9a09c7cfc14bb38af005ee6276d4eb.png?resizew=120)
其中正确的命题是______________ .
①半径为2,圆心角的弧度数为
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/8cec4de4fe2b4b5d9f431510dca25087.png?resizew=12)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/8cec4de4fe2b4b5d9f431510dca25087.png?resizew=12)
②若
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/c63022eae3e849aa9928d2b0f3742cec.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/ecfa57fd06054fc78e6259eb520a8dc7.png?resizew=166)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/279194265042495f9978a8d2d4188d8b.png?resizew=118)
③函数
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/373bf91b57a0437ab8cdaa9d909d954c.png?resizew=106)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/084d70afa18648c0bf9da4b42c0d3f86.png?resizew=49)
④已知
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/3747f95fc7fc4c28b4b3dde302559200.png?resizew=74)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/57935b5019ff4011b41746d4a8f97c25.png?resizew=135)
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572380069625856/1572380075384832/STEM/8e9a09c7cfc14bb38af005ee6276d4eb.png?resizew=120)
其中正确的命题是
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】如图所示,在平面四边形
中,
,
,
为正三角形,则
面积的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b59ab6bf6111dda4a3d428454768b77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/2018/6/24/1974326375292928/1979010188197889/STEM/b88f889bb7254295968454bafc2359e4.png?resizew=189)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】在锐角
中,若
,且
,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1137646fc639cd12cc7eb9363f9891c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13832681708f604e88b3067b72f6e9a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐1】在△
中,内角A,B,C的对边分别是a,b,c,若
,
,则当角C取最大值时,△
的面积为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8242f3a6a00149f6211bfce2dfc5c4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐2】下列命题:
①若
,
,
,
为锐角,则实数
的取值范围是
;
②若非零向量
,且
,则
为等边三角形;
③若单位向量
,
的夹角为60°,则当
取最小值时,
;
④已知O是平面上一定点,A,B,C是平面上不共线的三个点,动点
满足
,
,则动点
一定通过
的重心;
⑤如果
内接于半径为
的圆,且
,则
的面积的最大值为
.
其中正确的序号为_______________________ .
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8a72de9c4a1e1b34e982396ee927e55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b457735b4ada1011c6722d814d429fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbf84ad44e386152d70a9f66992fc019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9ad8dcdd802bd99e8cbc04900d1c0c.png)
②若非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a84a2aa0743a269c321435431079a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ed43f95a388812047a53472ec542b0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
③若单位向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77eda1433285ecda6558784098061a9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2a51944c720568f35d443589dfc1aa.png)
④已知O是平面上一定点,A,B,C是平面上不共线的三个点,动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce4db78a17d390f10c2f34b259549ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af66740571d484eed9157632d5ce8edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
⑤如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5729b6dd4cd7d312bf9513c99fc511e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d0f3854d46d1627c6feb50347e8035.png)
其中正确的序号为
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐3】已知
是定义在R上的偶函数,且在
上单调递增,对于任意实数t,
恒成立,求a的取值范围__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e03890e539a9f519baa923d5823b9c40.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
名校
解题方法
【推荐1】等腰直角三角形
中,
,
,点
在线段
上.点
在线段
上,且
,
面积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45b8b000c9c286bff8a480dbf03b513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1167767fd847678ef279f3e637f2828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3530ee12bd68b53970b83f28985b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9b0eb72986587ffecf87c22a224bcd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800eca4e8d1c3f4792a1d3aba6f3b481.png)
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】已知
的内角A,B,C的对边分别是a,b,c,
,若
,则
面积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ebb9f393ecfee233e0bc378db6f37f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次