2016 May 25th Edexcel Core 2 Questions and answers. [Unofficial mark scheme] 2016 Watch

Student7th
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Grade boundary ideas?
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HannahC-H
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#102
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(Original post by X_IDE_sidf)
http://www.thestudentroom.co.uk/atta...1&d=1464204940 <-- NEW PDF. This is V2 and has been layed out in a more stylish manner and has Q 9c corrected

Edit: to satisfy my ocd, the real scanned paper will be hitting shelves soon.
Link doesn't work :-(
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X_IDE_sidf
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#103
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(Original post by HannahC-H)
Link doesn't work :-(
http://docdro.id/xPyA5Yl

edit: DERP, forgot to change Q 8. =0 not -1
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bulletman54
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#104
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For question 7 would you lose a mark for not putting +c on the integral?
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HannahC-H
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TY
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X_IDE_sidf
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(Original post by bulletman54)
For question 7 would you lose a mark for not putting +c on the integral?
I think so, the question didn't specify limits in (a) so without + c you are technically incorrect.
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bulletman54
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#107
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(Original post by X_IDE_sidf)
I think so, the question didn't specify limits in (a) so without + c you are technically incorrect.
What was the exact wording of the question ?
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X_IDE_sidf
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#108
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#108
(Original post by bulletman54)
What was the exact wording of the question ?
find \int (3x-x^{\frac{3}{2}})dx
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medapplicant2016
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If I got x = ~17 and didn't sub back into P, how many marks do you reckon I'll lose?
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medapplicant2016
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#110
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(Original post by bulletman54)
What was the exact wording of the question ?
Usually the mark scheme says (+c) in brackets as in previous years, so I don't think you'd lose a mark
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medapplicant2016
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#111
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(Original post by bulletman54)
For question 7 would you lose a mark for not putting +c on the integral?
In previous years its in brackets and not required
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bulletman54
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#112
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(Original post by medapplicant2016)
If I got x = ~17 and didn't sub back into P, how many marks do you reckon I'll lose?
2 i think cause u made a rounding error and never subbed for the min value
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bulletman54
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#113
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(Original post by medapplicant2016)
In previous years its in brackets and not required
Could you link me the markscheme for a question like this from a previous year?
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X_IDE_sidf
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(Original post by medapplicant2016)
In previous years its in brackets and not required
source
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UKoE Luna
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#115
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(Original post by X_IDE_sidf)
http://docdro.id/xPyA5Yl

edit: DERP, forgot to change Q 8. =0 not -1
Wasn't 6i

1-2cos(\theta -\frac{\pi}{5})

and not

1-2sin(\theta -\frac{\pi}{5})
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Sapereaude54
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#116
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For the perimeter question, if I substituted x=17, how many marks can I expect to lose ?
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X_IDE_sidf
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(Original post by UKoE Luna)
Wasn't 6i

1-2cos(\theta -\frac{\pi}{5})

and not

1-2sin(\theta -\frac{\pi}{5})
we are on to V4 now http://docdro.id/18BTG2C

Thanks
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tory88
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#118
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(Original post by X_IDE_sidf)
6 1-2\sin(\theta - \frac{\pi}{5})=0 solve for \theta and 4\cos^2 x + 7\sin x - 2 = 0

6 i) (3 marks) \frac{8\pi}{15}or \frac{-2\pi}{15}
ii) (6 marks) 345.5$^{\circ}$ or 194.5$^{\circ}$
Is question 6 written out correctly? I get \frac{11\pi}{30}or \frac{31\pi}{30}

EDIT: Seen that there have been amendments since then. Shouldn't 8i) be \frac{a-5}{9}?
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medapplicant2016
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#119
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(Original post by X_IDE_sidf)
source
(Original post by bulletman54)
Could you link me the markscheme for a question like this from a previous year?
http://qualifications.pearson.com/co...c_20150812.pdf

See question 6
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medapplicant2016
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#120
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(Original post by bulletman54)
2 i think cause u made a rounding error and never subbed for the min value
That's what I thought, I did get 16.something though, and did work out f"(x) > 0, which usually gives you 2 marks (you don't need to sub)
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