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# MAT Prep Thread - 2nd November 2016 watch

1. what was the answer for the multiple choice question which asked for a factor x^2+1 ? was it n is even
2. (Original post by Amitbalter)
Did u get that as well? Ye boi
Well that's 15 marks I've lost already
3. (Original post by louisforrest)
Was the angles for the sectors like pi/2 (+/-) pi/6

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Yes
4. Someone please post how many marks for each part for each question
5. (Original post by danielhx)
what was the answer for the multiple choice question which asked for a factor x^2+1 ? was it n is even
Yeah I think so (although my logic was a little shaky)
7. (Original post by dfbenjamin)
Yeah I think so (although my logic was a little shaky)
aww I got for no values of n
8. (Original post by louisforrest)
aww I got for no values of n
yh so did I :/
9. What did people get for two last multiple choices? I got d and b. The penultimate one was about max of ax + by when x^2 + y^2 <= 1 and the last was about the number of distinct prime factors and the last digit.
10. (Original post by louisforrest)
aww I got for no values of n
I think the idea was that if x^2 + 1 is a factor then subbing in x^2=-1 should give you 0, which only works if n is even

There's probably something I didn't think about that makes that wrong though
11. (Original post by CaiusMartius)
yh so did I :/
I used the remainder thereom and ended up with like 4^n=0
12. (Original post by danielhx)
what was the answer for the multiple choice question which asked for a factor x^2+1 ? was it n is even
It was no values of n
13. (Original post by m0.4444)
What did people get for two last multiple choices? I got d and b. The penultimate one was about max of ax + by when x^2 + y^2 <= 1 and the last was about the number of distinct prime factors and the last digit.
the penultimate one i got square root a^2+b^2. was that D? can't rmb the letter
14. (Original post by m0.4444)
What did people get for two last multiple choices? I got d and b. The penultimate one was about max of ax + by when x^2 + y^2 <= 1 and the last was about the number of distinct prime factors and the last digit.
I got b and d for the second to last and last, respectively...
15. (Original post by alexhazmat)
It was no values of n
it works for n equals to 2. difference of squares.
16. (Original post by m0.4444)
What did people get for two last multiple choices? I got d and b. The penultimate one was about max of ax + by when x^2 + y^2 <= 1 and the last was about the number of distinct prime factors and the last digit.
I swear like 2 or 3 of those were false not just 1 lol

can't remember which one i chose

and for the penultimate i guessed as sqrt(a^2 + b^2)
17. (Original post by dfbenjamin)
I think the idea was that if x^2 + 1 is a factor then subbing in x^2=-1 should give you 0, which only works if n is even

There's probably something I didn't think about that makes that wrong though
aww **** I thought it was x^2-1 so split it into (x+1)(x-1)
18. (Original post by CaiusMartius)
yh so did I :/
19. (Original post by louisforrest)
aww **** I thought it was x^2-1 so split it into (x+1)(x-1)
so did I???
20. was everyone's summation for the multiple choice 3?

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