Edexcel A2 C3 Mathematics 12th June 2015 Watch

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XxKingSniprxX
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#921
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Have you came across any factor formula questions on any past papers you've done?

I remember doing 8-10x past papers back in December and rarely saw a question on it.
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math42
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#922
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(Original post by XxKingSniprxX)
Have you came across any factor formula questions on any past papers you've done?

I remember doing 8-10x past papers back in December and rarely saw a question on it.
The only factor formulae question I recall was on FP3. It required only C3/C4 knowledge to do, I think. But I can't remember a single one on C3.
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samb1234
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(Original post by XxKingSniprxX)
Have you came across any factor formula questions on any past papers you've done?

I remember doing 8-10x past papers back in December and rarely saw a question on it.
I've seen some questions where you could use them if you wanted to but it wasn't required

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arsenalfc97
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#924
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#924
https://aeb44e76c1fb598b02a447aec286...%20Edexcel.pdf

Can someone explain how to simplify the composite function on the very last question of the paper?
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Kevin De Bruyne
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#925
(Original post by arsenalfc97)
https://aeb44e76c1fb598b02a447aec286...%20Edexcel.pdf

Can someone explain how to simplify the composite function on the very last question of the paper?
For example, 3^log3(9)=3^2=9. The function in the question is a bit trickier but hopefully that helps.
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studentwiz
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(Original post by arsenalfc97)
https://aeb44e76c1fb598b02a447aec286...%20Edexcel.pdf

Can someone explain how to simplify the composite function on the very last question of the paper?
2^-x can be written as 1/2^x

sub g into f = 3/2^logbase2 x -1

2^logbase2 x = just x

when number is powered in the same base they cancel out you can try it on your calculator e.g 123^logbase123 5 = 5

3/x -1 answer
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jmuz
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Whats the likeliness of going from a low B to a high A in the next 5 days ? lol
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FKA Stiglitz
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#928
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(Original post by jmuz)
Whats the likeliness of going from a low B to a high A in the next 5 days ? lol
With a fair few past papers, and a lot of attention paid to weak areas (topics for which marks are lost in papers), I'd say it's doable.
The questions tend to be formulaic and predictable.
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that________guy
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(Original post by humayra.ac)
Is this a correct method - If I draw a normal sinx graph, shift it down to -5 as that is where the minimum is, then sin x is either at 0 or -3/2pi. The answer is 3/2pi - why would it not be 0

State the minimum value of 4 sin x + 3 cos x and the smallest positive value of x for which this minimum value occurs.

5 sin(x+0,64) and the min value is -5 (worked out in part a)
Somebodyyyy answer this please......
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Ocean3
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(Original post by that________guy)
Somebodyyyy answer this please......
Name:  image.jpg
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Size:  504.2 KB

Is that what you mean? When sinx =-1 x does not equal 0
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somevirtualguy
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(Original post by that________guy)
Somebodyyyy answer this please......
I haven't looked at the question, but 0 isn't classed as a positive value so it will be the next value (3pi/2), plus when sin x = -1, x doesn't equal 0
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Artfanatic
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is anyone else really good at c3 and really bad at c4 and knows that this c3 paper will be your worst ever and then you will miss out on your A by 1 ums if so - i feel you

on another note - revise
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humayra.ac
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oh lol i realised my silly mistake, thanks for clearing it up !

(Original post by somevirtualguy)
I haven't looked at the question, but 0 isn't classed as a positive value so it will be the next value (3pi/2), plus when sin x = -1, x doesn't equal 0
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humayra.ac
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thanks for the pic made it clear and i see where i went wrong thanks !


(Original post by Ocean3)
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Is that what you mean? When sinx =-1 x does not equal 0
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ThePrestigeUK
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My plan is to revise C3 for a day solid before the exam , and same for C4 and same for D1

Lol im on a C/B grade standard atm for all three

I need an A in maths this year (got 86% UMS average at AS maths so slightly less pressure) but going up 1/2 grades in a day will be like hell I hope it turns out ok

Ive calculated if I get 90% in D1 I need two mid C's in c3 and c4 .. hope it doesnt come to that would love the A*
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FKA Stiglitz
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(Original post by ThePrestigeUK)
My plan is to revise C3 for a day solid before the exam , and same for C4 and same for D1

Lol im on a C/B grade standard atm for all three

I need an A in maths this year (got 86% UMS average at AS maths so slightly less pressure) but going up 1/2 grades in a day will be like hell I hope it turns out ok

Ive calculated if I get 90% in D1 I need two mid C's in c3 and c4 .. hope it doesnt come to that would love the A*
How are you for timing in C3 and C4?
Perhaps you could try papers in like 70/75 minutes to get through the steps quicker, so you have more time to go over each question in the exams.
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Artfanatic
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#937
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(Original post by ThePrestigeUK)
My plan is to revise C3 for a day solid before the exam , and same for C4 and same for D1

Lol im on a C/B grade standard atm for all three

I need an A in maths this year (got 86% UMS average at AS maths so slightly less pressure) but going up 1/2 grades in a day will be like hell I hope it turns out ok

Ive calculated if I get 90% in D1 I need two mid C's in c3 and c4 .. hope it doesnt come to that would love the A*
I have the exact same percentage as you and I totally messed up my M1 exam meaning (70-80 ums ish) so now C4 (consistent C grades) needs to be an A. I hope you ace that D1 exam haha
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ThePrestigeUK
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(Original post by FKA Stiglitz)
How are you for timing in C3 and C4?
Perhaps you could try papers in like 70/75 minutes to get through the steps quicker, so you have more time to go over each question in the exams.
If I work quickly I can get papers done in 1hr
thats my strong point in maths I work fast

but its my downfall in d1 where 1 mistake can cost you 5 marks
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ThePrestigeUK
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(Original post by Artfanatic)
I have the exact same percentage as you and I totally messed up my M1 exam meaning (70-80 ums ish) so now C4 (consistent C grades) needs to be an A. I hope you ace that D1 exam haha
Thanks hope you smash your exams too
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BBeyond
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#940
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#940
http://gyazo.com/08285872d0df0103cde73e2184be926b

how do i do ii part a? I can get an answer of arcsinx=arsincosy but that is only there allow answer, how would I get the preferred answer of arcsinx=pi/2 - y??
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