2012 GCE O Level Mathematics Paper 2 Suggested Solutions

冷风1985

冷风1985 发表于 25-10-2012 02:00
10)ii 是46.你对的,我以开始看错.

9b) 严格来讲是不可以的.得看如何批改了.

Xjhon

6(a)(iii) 应该要把3,6,12放进去吧，B里面的还是要算的
9(e)应该是三次方吧

菠萝包

冷风1985 发表于 25-10-2012 02:01
9b) 严格来讲是不可以的.得看如何批改了.

噢，因为9a）已经给了41.6，所以我觉得是不是在9B）时应该leave 一个exact  value？

拼命十三娘

辛苦了，谢谢

lol123

9（e）答案应该是1480吧。请问 y intercept 一定要写 （0，-2）？ 写 -2 算错？

hello1234567

8d) do not reject the answer yet. They asked you to solve but never asked for the true value for x. One mark is loss upon rejecting it. The reject part should be at part e), where they asked you to calculate 2000/x+100 using true value of x.

Cynicism_

hello1234567 发表于 25-10-2012 08:18
8d) do not reject the answer yet. They asked you to solve but never asked for the true value for x.  ...

Solve= find the value of x.
X= speed to empty the tank
So, x can't be negative.
Rejecting is needed to solve the equation.

zzz07

hello1234567 发表于 25-10-2012 08:18
8d) do not reject the answer yet. They asked you to solve but never asked for the true value for x.  ...

Solve= find the value of x.
X= speed to empty the tank
So, x can't be negative.
Rejecting is needed to solve the equation.

zzz07

我现在卷二96upon100， 卷一74upon80。听说去年A1是大于96／100，今天估计怎样？

_H0ney_

zzz07 发表于 25-10-2012 08:49
我现在卷二96upon100， 卷一74upon80。听说去年A1是大于96／100，今天估计怎样？

去年93、今年估计差不多，大部分的人做的都不错。但也是有人说british那边很久才上一次80多的A1，所以新加坡也不会总是把A1放的这么高，所以90以上可以稍微放心~不过这都是传闻啦，具体还是要看bell curve~