2012 GCE O Level Mathematics Paper 2 Suggested Solutions

菠萝包 · 发表于 25-10-2012 01:52:22|来自：新加坡

9）b）可以写成161.6吗？
10）ii）应该是46吧？

冷风1985 · 发表于 25-10-2012 02:00:06|来自：新加坡

菠萝包发表于 25-10-2012 01:52
9）b）可以写成161.6吗？
10）ii）应该是46吧？

10)ii 是46.你对的,我以开始看错.

冷风1985 · 发表于 25-10-2012 02:01:29|来自：新加坡

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 · 发表于 25-10-2012 02:06:59|来自：新加坡

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 · 发表于 25-10-2012 02:07:55|来自：新加坡

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 · 发表于 25-10-2012 02:53:52|来自：新加坡

辛苦了，谢谢

lol123 · 发表于 25-10-2012 02:59:43|来自：新加坡

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

hello1234567 · 发表于 25-10-2012 08:18:03|来自：新加坡

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_ · 发表于 25-10-2012 08:43:54|来自：新加坡

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 · 发表于 25-10-2012 08:47:10|来自：新加坡

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.

2012 GCE O Level Mathematics Paper 2 Suggested Solutions

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