名校
解题方法
1 . 若
,
,则满足
的m的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc61978d8d38ad08782a06acd581dcb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f8df397df7f22e669671149ee1ffad7.png)
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2 . 已知函数
在
时取得最大值,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f6d4796986a8943ced3b085f8b9394.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fae022680cd3df914cec0d2fb7a12af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19099ff9ce1b01be72e4535e600aeb63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26f6d4796986a8943ced3b085f8b9394.png)
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3 . 为了研究问题方便,有时候余弦公式会写成:
,利用这个结构解决如下问题:如果三个正实数
满足:
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ba07a669b1f519431dd0a73709f990.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df9c969e4a64a7449d7cbc088d39aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fe8faae6f6dc2fffadb444938f07501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60783331e0edf54727c2eebd493079d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfcc985662f674639c539dc7696c6c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ba07a669b1f519431dd0a73709f990.png)
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解题方法
4 . 设
为锐角,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10ac0e2a8707c0d8914949912c87369.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b22d6e7e4223111b9974e825ddf6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10ac0e2a8707c0d8914949912c87369.png)
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5 . 数列
是等比数列,
和
是方程
的两根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89178b8e8e45658d3bcb9ee6ab7c6828.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c28a854eda450ce5a2b68879b11992d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c346ef9edb3b0e6a36f4e621989a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89178b8e8e45658d3bcb9ee6ab7c6828.png)
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6 . 已知平面非零向量
的模均为
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799ad95449b4135dee2890ac31c43706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc983f1bad03411ae64d84ff7bdf2551.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a16710403d8a87b858d92647ebaa1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
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7 . 对于实数
,用
表示不超过
的最大整数,例如
.已知
,则下列3个命题中真命题的个数为__________ .
(1)函数
是周期函数;
(2)函数
的图像关于直线
对称;
(3)方程
有2个实数根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f161c2a3717f1b6c62d0d7dae0b606.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d23555720f4938189847b3531bd7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2297ab933ad7b37e272c0ac367f150d.png)
(1)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec25b105130d71d3d529524671b6218.png)
(3)方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f277209e43e8881f3b0ec4b1bc0df082.png)
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解题方法
8 . 已知
,且
,则点
在第__________ 象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca599151dae2ca77bd53af8b38b69684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9faccebbd12ce0332647b3ba6d2474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f42664269cd3e00de2e4dd8d02e886.png)
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解题方法
9 . 若
为锐角,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207b77aa3cf9351cf7ee25827f0688fd.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207b77aa3cf9351cf7ee25827f0688fd.png)
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10 . 已知复数
,且复数
满足
,则
在复平面内对应的点位于第__________ 象限.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad316d30f407b32b74564c6177723c95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a10de1216740ff1542ddb2968de5832.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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