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Edexcel C1 Unofficial Mark Scheme

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1. This is a work in progress, I don't have a copy of the paper to hand so if you remember any of the questions which are currently missing please let me know and I will add worked solutions and update the document.

I will be updating the document until it is complete. Please check back now and again.
2. Question 1 is incorrect, it is +8 not -8
3. You haven't Added Question 6c it was the sum to 100 of a(n+1)+ka(n) (cant do the little n sorry but you know what I mean). I think it was 500 as the ka(n) cancels out
4. (Original post by Rusty_Pliers)
Question 1 is incorrect, it is +8 not -8
it's -8 as you add 1 to the power of -1/2 which becomes 1/2 then simply divide -4x^1/2 by 1/2
5. (Original post by lietuvis_vaikas)
it's -8 as you add 1 to the power of -1/2 which becomes 1/2 then simply divide -4x^1/2 by 1/2
you are correct i read it as +4 not -4 Sorry my bad
6. I think there was a question on surds
2b was something like 12sqaure root3 / 2squaer root 2
i think!
7. lol dw it's Q3 its there :P

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