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# Edexcel C4 June 2016 - Unofficial Markscheme

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1. (Original post by k.russell)
No, it was over 5, and the numerator was close to 1696, it might have been 1696, but I remember 1637 or something like that, but I know 1696 is right.
2. (Original post by Mattematics)
Pretty sure every answer is now correct. Enjoy

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Question 2:
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cos(theta) was 4/5. Left it out by mistake.
can you please explain how you got that for 3a?, i got the same but without the -2 on the top
3. what was question 6? i don't remember it at all i think i got the answers correct though
4. (Original post by Mattematics)
Pretty sure every answer is now correct. Enjoy

Question 1:
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Show

Question 2:
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Question 3:
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Question 4:
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Question 5:
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Question 6:
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Question 7:
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Question 8:
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cos(theta) was 4/5. Left it out by mistake.
do you have the marks for each question ?
5. (Original post by JanK24)
do you have the marks for each question ?
that would be helpful, also what did you have to do for 6b
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(Original post by shitspy)
not so sure on 7b

same.. i just don't remember any of my answers looking like that. But then again, I don't have the best memory
7. on question 6a I didn't integrate it, after finding the partial fractions, how many marks is it worth and how many will I lose
8. Differentiated one term incorrectly in part a or Q3, how many out of the 9 will that lose me.

Got the value of theta correct in vectors but didnt have time to find the E coordinates.

How many marks will i have lost, 10 ? 9 ?
9. If i got one mistake on 3a cos i wrote 1/pisinpiy instead of pisinpiy, would i lose all my marks on 3b?
10. Does anyone anywhere have copies of the questions?
11. What on earth was 6c and d again? :/
12. If someone has marks for the questions, please, post it
13. How were you suppose to go 7b??!
14. question 2 i got the calculation wrong somebody tell me the number of marks on question 2
15. (Original post by Mattematics)
Pretty sure every answer is now correct. Enjoy

Question 1:
Spoiler:
Show

Question 2:
Spoiler:
Show

Question 3:
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Show
Question 4:
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Show

Question 5:
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Show
Question 6:
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Show
Question 7:
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Show
Question 8:
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cos(theta) was 4/5. Left it out by mistake.
For 4a I wrote: x=sqrt(3600-5t) ????
16. Please can someone help me

On Q3 I forgot the minus 2 and got an answer of 6/22+π instead of 8/22+π. This lead to my next part being wrong also. Bow many marks do you think I'll loose. All of them? Thanks

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17. (Original post by Mattematics)
Pretty sure every answer is now correct. Enjoy

Question 4:
Spoiler:
Show

i don't remember getting the Q4 part a answer. But I did get 633 for b. Does this mean I must have gotten part a right as well? Like was b dependent on a? Because I may or may not have gotten it right, just don't remember.
19. (Original post by Tabatha Gregg)
Differentiated one term incorrectly in part a or Q3, how many out of the 9 will that lose me.

Got the value of theta correct in vectors but didnt have time to find the E coordinates.

How many marks will i have lost, 10 ? 9 ?
literally the same as me ahah..except i did have time to find the E coordinates...just did it wrong
20. How did you guys do 7b)? where you have to find the volume of revolution

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