GCE 'O' Level E Maths Paper 2 Aftermath Report

last SG · 2008-10-30T12:37:14+00:00

3 years and i really cannot make iti have to accept the fact

Vendettus SG

you all never use that calculator that can solve cubic equations meh?

You're supposed to use your graph.

davidche SG

mine is 0.5 nia.

but how did you do it?

what i did was move c to the right and take out x and times 1/5 to both sides.

the - at both sides wld cancel.

so 1/5x( -b - xsquare) = c

c= 2-2x also, cos the line they asked you to draw was y = 2-2x

so 1/5x( -b - xsquare) = c/5

compare wif 1/5x(12 - xsquare) = 2-2x

Vendettus SG

equate both equations together. You'll get something that equates to 0. Then compare that with the coefficients of the given equation.

iamapebble SG

what i did was move c to the right and take out -1/5x

the - at both sides wld cancel.

so 1/5x( -b - xsquare) = c

c= 2-2x also, cos the line they asked you to draw was y = 2-2x

I suddenly see the light.

eagle SG

But then there's only 1 solution from the graph we get.. because from what I know if there's 3 values straightaway (x-a)(x-b)(x-c). But only one, how to do uh?

cubic equation doesn't necessary have 3 real solutions

eagle SG

You're supposed to use your graph.

No one stopping you from using your calculator to verify

davidche SG

sry abit mistake in my explaination. dont take out 1/5x. just take out x and times 1/5 to both sides.

iamapebble SG

Oh ya hor.. AHH I know already, thanks! :( Nevermind, it's only 1 mark.

Mikethm SG

If interested, here are rough solutions with workings...

http://www.maths-tuition.com/singapore-gce-o-level-a-e-mathematics-tuition-download/cat_view/24-school-examinations-papers-for-gce-o-level-4016-mathematics.html

Be so kind as to inform me of any careless mistakes here thanks.

Theguiltshow SG

I multiplied both equations together, ended up with a highest x power of 4. Factorised the equation by taking out the x, then used the equation inside the brackers to divide by my value of x, giving me A= 1, B= -12, C= 12.

davidche SG

lol sounds like you are doing a 10 mark qn. This paper i think is set to be difficult because they award less marks for more workings. they asked for value of A B and c man. and it is ONE mark `O`

Vendettus SG

x power 4? Whoa.

You're wandering far from the path, dude.

Theguiltshow SG

YEAH sure wrong la haha I was like wth why am I doing so much just for 1 mark.

iamapebble SG

If interested, here are rough solutions with workings...

http://www.maths-tuition.com/singapore-gce-o-level-a-e-mathematics-tuition-download/cat_view/24-school-examinations-papers-for-gce-o-level-4016-mathematics.html

Be so kind as to inform me of any careless mistakes here thanks.

The one on CF, is it 3,7,14,11,5? >< Then mean and SD followed from these values.. Not too sure.

Last question is without replacement, so you can't include 1,1 2,2 3,3 4,4 5,5 and 6,6.

Other than these two my answers are the same (or differ by +/- 0.1) so I assume they should be right.

Vendettus SG

If interested, here are rough solutions with workings...

http://www.maths-tuition.com/singapore-gce-o-level-a-e-mathematics-tuition-download/cat_view/24-school-examinations-papers-for-gce-o-level-4016-mathematics.html

Be so kind as to inform me of any careless mistakes here thanks.

Thanks.

The_innocent SG

http://www.maths-tuition.com/singapore-gce-o-level-a-e-mathematics-tuition-download/cat_view/24-school-examinations-papers-for-gce-o-level-4016-mathematics.html

i dun really agree with the last part on probability.

There should only be 30 possible outcomes, isnt it?

And we can get the number 4 two times..

YayaKheo SG

YA, i also think the probability answer is wrong. Haha.

And I think that this paper is the most difficult out of A maths p1 and 2, and E maths p1. Argh.

Mikethm SG

Ouch I didn't read carefully. Thanks.

Thanks for the head up. All solutions correct now.

YayaKheo SG

Predict for the percentage to get A1 for this E maths paper for this O level?

Mikethm SG

Solutions were corrected according to feedback thanks. Made a mistake in question 10 due to rush.

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