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

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2 years ago
#121
(Original post by medapplicant2016)
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)
If you got 16.6 then i think you may only lose 1 mark then just for not subbing for the minimum value
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2 years ago
#122
(Original post by dididid)
I did this

log 3 (3b+1/a-2) = -1
3^-1 = 3b+1/a-2
1/3= 3b+1/a-2
a-2=9b+3
a-5=9b
b=a-5/9
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2 years ago
#123
(Original post by tory88)
Is question 6 written out correctly? I get or

EDIT: Seen that there have been amendments since then. Shouldn't 8i) be ?

I think you're correct, this was my workings.

1
2 years ago
#124
(Original post by bulletman54)
If you got 16.6 then i think you may only lose 1 mark then just for not subbing for the minimum value
Cool, thanks so much!
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#125
(Original post by UKoE Luna)
I think you're correct, this was my workings.

At this point I give up, Yes you are right however the question in the exam may have been . It has been too long, I forget. I'll wait till I can see the paper again tomorow
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2 years ago
#126
(Original post by X_IDE_sidf)
we are on to V4 now http://docdro.id/18BTG2C

Thanks
Shouldn't question 9c) be to prove that

I forget how to LATEX... Shouldn't the fraction outside the brackets be
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2 years ago
#127
(Original post by X_IDE_sidf)
At this point I give up, Yes you are right however the question in the exam may have been . It has been too long, I forget. I'll wait till I can see the paper again tomorow
Fair enough, probably the best shout, you can only get so far with memory, but I must thank you for the awesome mark scheme!
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2 years ago
#128
(Original post by X_IDE_sidf)
At this point I give up, Yes you are right however the question in the exam may have been . It has been too long, I forget. I'll wait till I can see the paper again tomorow
Please quote me in if you give any corrections to the questions.
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2 years ago
#129
how many marks would b 90 UMS
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2 years ago
#130
for question 6 b, are we supposed tto give answrs to 1 decimal place?
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2 years ago
#131
(Original post by tory88)
Shouldn't question 9c) be to prove that

I forget how to LATEX... Shouldn't the fraction outside the brackets be
yes, you're right
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2 years ago
#132
for question 6 b, are we supposed tto give answrs to 1 decimal place?
Pretty sure it said to give answers to 1dp yes.
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2 years ago
#133
(Original post by X_IDE_sidf)
The question didn't have limits at that point, part (a) was simply
Well then it's just +c
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2 years ago
#134
Can somebody type out the actual question 7b? I cant remember what it was and may help me to remember if i got 24.3
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2 years ago
#135
(Original post by X_IDE_sidf)

(3 d.p.)
Hey guys I did exactly this in my exam, I remember writing it identically however I got the wrong answer (calculator error maybe?) Would I get the method marks but not the answer mark?
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2 years ago
#136
(Original post by Dieselblue)
Hey guys I did exactly this in my exam, I remember writing it identically however I got the wrong answer (calculator error maybe?) Would I get the method marks but not the answer mark?
I did u10 - u9 or is that wrong? You should get the method mark if it was only a calculating error.
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2 years ago
#137
(Original post by Brydon hurst)
I did u10 - u9 or is that wrong? You should get the method mark if it was only a calculating error.
I did ar^(9-1)-ar^(10-1) I got -0.025 though
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2 years ago
#138
(Original post by Dieselblue)
I did ar^(9-1)-ar^(10-1) I got -0.025 though
Yeah you will definitely get method marks.
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2 years ago
#139
(Original post by Brydon hurst)
Yeah you will definitely get method marks.
Ok thanks thats good to know
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2 years ago
#140
any ideas for grade boundaries? roughly how many marks for an a?
0
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