名校
解题方法
1 . 零件
分别先在机器
上加工,然后在机器
上加工,加工所需时间(单位:分钟)如表所示.
①若加工顺序为
,则加工完所有零件所需时间最少为________ 分钟;
②改变这5个零件的加工顺序,可以使得加工完所有零件所需时间更少,所需时间最少为________ 分钟,共有_________________ 种排序方法使得所需时间最少.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d78a86385e8b4b6f4ffff70f7dd2e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①若加工顺序为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32d78a86385e8b4b6f4ffff70f7dd2e8.png)
②改变这5个零件的加工顺序,可以使得加工完所有零件所需时间更少,所需时间最少为
机床 零件 | ![]() | ![]() |
![]() | 1 | 5 |
![]() | 8 | 3 |
![]() | 3 | 9 |
![]() | 4 | 5 |
![]() | 7 | 6 |
您最近一年使用:0次
2024高一下·全国·专题练习
解题方法
2 . 在等腰直角三角形
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a9d11c1fdda8f3bb2ef921bc75f816.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4cb2e032c390581b7ba95e6d03867e.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157d543691231dc939fcf400be8499c8.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a9d11c1fdda8f3bb2ef921bc75f816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4cb2e032c390581b7ba95e6d03867e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157d543691231dc939fcf400be8499c8.png)
您最近一年使用:0次
3 . 下列各个对数中,其值为负的有_________ ,其值在0和1之间的有________ ,其值大于1的有________ .
(1)
;(2)
;(3)
;(4)
;(5)
;(6)
;(7)
;(8)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e24d42f61784c642e9eb1316afdd2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc385af4878aa961bc3ec5ee6cc223ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a3cb5454b762817ba7619e53941e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26a026f4c1fe9358ec8b56653bf22e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a355f4cf9f2a4c8133ea1b254a855f89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ec2505b7de20257f902923f5e1b62e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fca8e7ed713e9cf040711a9de3b5d220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a220c2a9832df05656d3673960a190e.png)
您最近一年使用:0次
名校
4 . 某高中二年级共有学生425名,其中男生204名,女生221名,为了解该校高二年级学生的身高情况,现从中抽取50名学生测量身高,应当采用______ 的方法求出男女生分别要抽取_____ 、______ 名,然后在此基础上进行简单随机抽样.
您最近一年使用:0次
名校
5 . 某台机床生产一种零件,在10天中每天生产的次品零件数依次是:0,1,0,2,2,0,3,1,2,4,这组数据的平均数是_______ ,中位数是_______ ,标准差是_______ .
您最近一年使用:0次
2024高一上·全国·专题练习
6 . 用符号“
”或“
”填空:
(1)若
,则-1______ A;
(2)若
,则3______ B;
(3)若
,则8______ C,9.1______ C.
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
______
;
(5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be3ad3dd6803d92df6ff8a80cd35095.png)
______
;
(6)2017______
.
(7)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a734873a608f0c070dec80b89d179754.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
______
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650ef902d427468119ea4f00fc2717ee.png)
______
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a02d44492b51b0e08208fdc0d1707025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e581739cffb5676d997a58ab10d58880.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3480f7b5270400dabc9d156e900ad510.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57fc32180bd2940fcd4641c5a53034f5.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5eaaf5803018c29c4b410c133e9fdf.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffec2d9456b1326ca8696725b26b5a8e.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2be3ad3dd6803d92df6ff8a80cd35095.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eff8818b16d3a4a75713eefc79de5b6.png)
(6)2017
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35065aed7886660083463b1c418dd50.png)
(7)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a734873a608f0c070dec80b89d179754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e680c82535270feea54ec5cc81fcc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e680c82535270feea54ec5cc81fcc99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/619096595112f0340a43b756e114dd3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650ef902d427468119ea4f00fc2717ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
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2024高一上·全国·专题练习
7 . (1)若角
的终边落在
轴上,则
的取值集合为_________ .
(2)若角
的终边落在
轴上,则
的取值集合为_________ .
(3)若角
的终边落在坐标轴上,则
的取值集合为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)若角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2023高三上·全国·专题练习
解题方法
8 . 在
中,已知
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
____________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb6362bc99fba4bcd7331db9aee922c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7112e7ccb1eb90facfa5182ea763970a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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9 . (1)函数
的导数是________ ;
(2)函数
的导数是________ ;
(3)函数
的导数是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5373fa3643094e6205ec878bf8eb2520.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f65158fbea7984021ab57105028a0c7.png)
(3)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/100fd3461a4efa35563dd4e58f3f35b9.png)
您最近一年使用:0次