解题方法
1 . 已知向量
,
,若
,实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a820047334d2482e3521f8b33a8b002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a5ac3fbe4f90d7f7581b8580a5d9dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
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2 . 已知在
中,
为
上的一点,且
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1ef7d4996cbe233f3dc69e8669cd9f.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a56f5564199aab0b5cf123c56ec5baa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09ccf941a12f2c64efae29da7bd4967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba1ef7d4996cbe233f3dc69e8669cd9f.png)
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名校
3 . 由数学王子高斯证明出的代数基本定理的内容可知一元
次多项式方程有
个复数根,且对于一元二次方程,其两个复数根互为共轭复数.若复数
是一元二次方程
的一个根,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302375a5ef2aa395a5cc2583627f68d9.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74bbede2e9357ab9a2b5a3d05ddf9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0342195c134d540f32c6e192465636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/302375a5ef2aa395a5cc2583627f68d9.png)
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解题方法
4 . 已知正数
满足
,则当
取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
_______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9615fb005e74640174d0f55e4a18476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7e12253044b5abff2a56dcd730ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
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5 . 已知向量
与
的夹角为
,则
在
上的投影向量的模为_________ ;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0495de5b6d0fb63ae09d79f5315c52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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解题方法
6 . 已知正方形
的边长为
,
,
,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f63f16e90ec064a5322e77257e7668e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2302e928a9fd7c40071086ad6a8f8d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/000e4893e671132e74f11d3638d5fbb9.png)
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解题方法
7 . 函数
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c728e3353bd76807c7181aab7f2640.png)
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8 . 复数
满足
(
为虚数单位),则
的共轭复数的虚部是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573121d4915b463789a431a5bea8cec2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
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解题方法
9 . 记
的内角
的对边分别为
,若
,试写出一个
值,使该三角形有两解,则满足题意的
的值可以是______ .(仅需填写一个符合要求的数值)
![](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/88d89da4ae7f9d845c4c149d526e1766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
10 .
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb2575794cc895207a3a33156aaf2f87.png)
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