1 . 已知复数
(
为虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b39dbe165cabe9261838acbaa92d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
您最近一年使用:0次
2 . 抛物线
上一点到点
的距离最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
您最近一年使用:0次
3 . 函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea9cd8595bbfb83890ac30b70031741.png)
的图像记为曲线F,如图所示.A,B,C 是曲线
与坐标轴相交的三个点,直线BC与曲线
的图像交于点
,若直线
的斜率为
,直线
的斜率为
,
,则直线
的斜率为____________ .(用
,
表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea9cd8595bbfb83890ac30b70031741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f8f734322eb274c2dc70bf52d0b04f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1222d3090abe74ee289ac9de7fe29d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
您最近一年使用:0次
4 . 点
是棱长为1的正方体
棱上一点,则满足
的点
的个数为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d633a5d173fc5b6949ac7d47ff350a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
5 . 已知圆锥的底面半径为
,母线长为
,则该圆锥的侧面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次
解题方法
6 . 已知多项式
对一切实数
恒成立,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d3f884ec099ec5700ad255c0259ad0.png)
____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59e4e1f484587d1ba8a519b5a4bb48ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d3f884ec099ec5700ad255c0259ad0.png)
您最近一年使用:0次
7 . 某商品的成本
与产量
之间满足关系式
,定义平均成本
,其中
,假设
,当产量等于____________ 时,平均成本最少.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1494f6056d8fceec5f23ae24f4f91b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d888f1d06dac9923827fc37f4814e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7411e0e52a07fcbed37c127d145eed55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f693bf1593bfe0784ae387bef6c72259.png)
您最近一年使用:0次
8 . 学生到工厂劳动实践,利用
打印技术制作模型,如图所示.该模型为长方体
中挖去一个四棱锥
,其中
为长方体的中心,
,
,
,
分别为所在棱的中点,
,
,
打印所用原料密度为
.不考虑打印损耗,制作该模型所需原料的质量为____________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3af6f61348fc3cf1e9614916afe3ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd3cf0164966a391cd07c53ed87135a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb1bd790f2c4b5ff8cb112bee05d0ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7ba195b77015a6316a74dde8ca8c1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b3af6f61348fc3cf1e9614916afe3ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ce43bf2cee77e2617a11dfca38a6c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/276509f01529d982ab21e479a4619268.png)
您最近一年使用:0次
9 . 已知向量
,
,则
在
方向上的投影向量为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b3515de9a26c0397039e077f272b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b5379b7cff421f53c6a33e6d3803647.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
您最近一年使用:0次