This should be the correct way of doing..

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Added on November 27, 2010, 10:29 amLol this is wrong. If you're doing that way, by subbing in f(x) in directly, the correct working should be h(x-2) = x^2+3x+1 but not h(x)-2=x^2+3x+1 because f(x) represents (x-2) not (x)-2. Note that h is a function, that maps (x-2) to x^2+3x+1.


The answer given by the answer scheme is wrong. It should be h(x)=x^2+7x+11
Refer to 556611's working for the correct solution.

This post has been edited by henry930821: Nov 27 2010, 10:33 AM

lol i did that question for like 6 times and i can't find my error.
This question is from Perak trial..=)
But I feel that the skema has a few mistakes...

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Added on November 27, 2010, 10:59 ami got a weird answer too
-1<x≤-1/2 3≤x<5

This post has been edited by 556611: Nov 27 2010, 10:59 AM

Have you read my reply?

Agreed especially in paper 2 question 2b) and 12d)

they differentiate wrongly for 2b) and the method for 12)d is wrong

i dont think i shade it

Can you all tell me how you memorise the procedure for all the science's subjects paper 3? Or is there any spotted topics so that you all focus on those spotted only?

This post has been edited by SkyHermit: Nov 27 2010, 11:20 AM

I didnt shade it. Lol sej got BI meh?

the ketua ask us to shed so we shed

Understd the concept and memorize the important things onli. Physics i donno lol

i understand what the experiment is going to do, but i don't know those appratus and materials. There are so many

guys .. does parallel vector have same magnitude ? << add math =x

Don't memorise the procedures. They only cost you 3 marks at most.

For every experiment, you'll get free marks for aim, variables, materials, apparatus, tabulation and analysing..cause you can find them in the question

and you're allowed to create your own experiment or procedure as long as it is acceptable

For physics, i usually put the appratus is set up
As shown in the figur above. Then i put how to control the manipulated and reaponding. Bammm 3 marks

No. Parallel vectors may or may not have the same magnitude. If vectors are parallel, one of the vectors is the scalar multiple of the other vector. If vector a is parallel to vector b, a//b therefore a=kb with k as a scalar. If a = 3b, therefore a//b with the same direction.

This post has been edited by henry930821: Nov 27 2010, 11:42 AM

God does not care about our mathematical difficulties， He integrates empirically. —Albert Einstein

But we must know chemistry procedure very well cuz in Paper 2 Section C they will ask for it.

For Paper 3, they are some of the apparatus given, but actually there are more than that. So if we just copy from there do we get full mark for apparatus?

actually don't have to memorize apparatus. you just need to roughly know the experiment.

like ticker tape experiment, you need ticker timer, ruler, wooden block, trolley etc. just imagine the experiment and derive your apparatus from there.

Ok. i will try to read it tonight and see if i can roughly know the experiment or not. Thanks

whats the ans