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# EDEXCEL CORE 1 MAY 18TH - Unofficial Markscheme

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1. It is Edexcel
(Original post by Puddles the Monkey)
What exam board is this for?
2. (Original post by sheelo73)
I messed it up pretty bad. I need to do well in the others to pull up my overall grade
Same here I need to do better in c2
3. (Original post by TrueDAN)
Well I doubt a lot of people would have got full marks in the paper to say the least!! Can't tell though, but I reckon they will have to be significantly lower.
Nearly did, I integrated, instead of differentiating for question 7. I'm completely hurt
4. does anyone know how many marks Q9 was overall and individually??
5. Oh no.. I got the range of p and after that I wrote them as 1,2,3,4... What will happen
Nearly did, I integrated, instead of differentiating for question 7. I'm completely hurt
Unlucky!!! My min mark I can get is 63 and max is 73 - would love a 70+ but I've definitely missed out on 100ums I think !
7. Question 5 you were supposed add no subtract to get y as y = 1-4x so u = 11/7 and 7/3
8. 11d is actually 2y-17x+35=0
9. (Original post by SM45367)
EDEXCEL C1:
Q1) 2/5X^3-8X^1/2+3X+C
Q2) y=6X+2
Q3)a) 2root 2
b) 3root 6
Q4a) stretch in y-direction by scale factor 3.
b) translate by vector (0,-4) (downwards)
Q5) X=-1/7 ; Y= -1/3 X=-3/7 ; Y=1/3
Q6)a) A2= 5-4K A3= 5-5K+4K^2
B) 4K^2-9k+1
C)I) I forgot to do again lol
Q7)dy/dx= 6X+2X^-2/3+X^1/2+7/6(X^3/2)
Q8)a) proof of inequality- had to substitute the 2 equations and the discriminant<0
b) 1/2<P<9/2
Q9)a) £225
b) £180
c) £1710
d) 18 years from 10 years old so 27 years old
Q10)a) 5Y+3X-44=0 b) R: (44/3,0) c) area of Quad: 76 units (this proved extremely difficult when splitting into 2 triangles, so I split in 2 triangles and a rectangle)
Q11)a) dy/dx= 6X^2+2KX+5
b) K=41/8=5.125
c) y co-ordinate- 49/2
D) 2y-17x-83=0

give the correct answer if any of these are wrong and ill edit it

Q10 c) is 815/15 which is 163/3, 54.333
i got 1783/15 tho XD
I calculated the area of the big triangle and take away the area of the small triangle, but i forgot to divide the area by two when calculating the big triangle lol.
10. no wait 11d wat 7x-2y plus or minus 35=0
11. (Original post by tracyvo)
I got Q10 c) area = 163/3
Q11c) 1/2
d) 2y-17x-35=0
for Q2 im pretty sure it was 9^2x+1 instead of 3x+1 :'(
making y equal to 2x+4
12. (Original post by TrueDAN)
Damn you have a good memory. That's sick!
For 9C i got £1050 but I may have messed up on it.
For 11 C and D I got the Y to equal 1/2 and D I got 17x-2y + 35 =0 so again I may have messed up.
For 10c : I am pretty sure that it is 162/3 units^2 and not 76 via splitting it into a trapezium and triangle.
I agree with the simultaneous equations - I definitely got answers like that.
Thanks for remembering Q11 A I agree with that and they for the rest I got the same!
I agree with TRUEDAN it was definitely a fraction, I got my fraction out of 6 but I guess it was unsimplified
13. I got 163/3 for my area but I don't knkwaybe I miscalculated
14. You got that right. Nearly got full marks, but I messed up on the easiest thing
You got that right. Nearly got full marks, but I messed up on the easiest thing
Got what right the answer or the miscalculation
16. has anyone actually got the questions rather than just the mark schemes?
17. (Original post by Enderbat1999)
Got what right the answer or the miscalculation
Lool the answer was right. 163/3 or 54 1/3
Lool the answer was right. 163/3 or 54 1/3
Wait what Really don't bs
19. Could someone please send me a link to the actual C1 edexcel 2016 paper😊
20. (Original post by sakboi21)
Anyone know how many marks per question?
Do you remember how many marks Q6ci and ii were and Q9c and d and um q10 c?

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