07年1月梦队讨论专贴 新增cc的RC突破计划

tshen01

I want to join the team. how can I join? my msn: tshen01(A) hotmail.com

cls

financeliuyang(A) hotmail.com

北京 边工作边考

colorful_na

以下是引用raymond6在2006-11-13 21:01:00的发言：

要求：支持sp->v

取非

sp->v的逆命题是v->sp，
v->sp的否命题是v->非sp，找答案b的形式就是v->非sp

逆否命题=原命题

取逆否命题不是又回去了,怎么能说是加强呢?B选项的意思是什么?请继续解答

colorful_na

继续数学...DS

on a certain day it took Bill three times as long to drive from home to work as it took Sue to drive from home to work. How many kilometers did Bill drive from home to work?

(1)Sue drove 10 kilometers from home to work,and the ratio of distance driven from home to work time to drive from home to work was the same for Bill and Sue that day.

(2)the ratio of distance driven from home to work time to drive from home to work for Sue that day was 64 kilometers per hours.

这个题目我看了很久没怎么读明白意思,希望高人指教....

colorful_na

DS the second one...

Each M-type memory unit will increase the base memory capacity of a certain computer by 3 megabytes. what is the base memory capacity, in megabytes of the computer?

(1)2 M-type memory units will increase the computers base memory capacity by 300 percent.

(2) the momory capacity of the computer after 2 M-type memory unites are added to the base memory capacity is 1.6 times the memory capacity of the computer after 1 M-type memory unit is added to the memory capacity.

挖把泥巴加油做...哈哈,请教

colorful_na

问题

在ax+by +c=0的方程中,他的slope能否用a和b来表示,公式是什么

题目如下.DS

in the xy-plane, the line with equation ax+by+c=0,where abc不等于0, has slope2/3. what is the value of b?

(1)a=4

(2)c=-6

请解答

DJungle

哇，同学们都开数学啦，我还OG的干活呢。。555

这里想问一个比较白白的问题，大家做题都是打印出来做呢，还是在电脑上做啊？我比较prefer在纸上做，在电脑上实在不能100%集中注意力，但考试是机考，怕到时候不能十分适应。另外，题太多了，打印想想都非常恐怖。。555

非常郁闷的说。。。

babypace

加油，加油。做OG不算慢。

DJungle

谢谢babypace的鼓励，非常感动的说。。

嗯，看书去了。。。

dreamhope

以下是引用colorful_na在2006-11-14 10:32:00的发言：

问题

在ax+by +c=0的方程中,他的slope能否用a和b来表示,公式是什么

题目如下.DS

in the xy-plane, the line with equation ax+by+c=0,where abc不等于0, has slope2/3. what is the value of b?

(1)a=4

(2)c=-6

请解答

我认为选a，一个关于斜率公式的题2/3=-a/b