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OCR MEI - C1 - 13th May 2015

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Original post by Bruhh
Yeah, I quite like FP1 since much like Core 1 they almost always have the same questions just slightly different on every paper.


I completely agree, i absolutely love when they give you 14marks for the graph questions! Just praying that the induction question isnt too tricky!
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Bruhh
10
Original post by JamesExtra
Guys what was the equation that you had to complete the square on??


I think.... 3x^2+12x+13?
Original post by Manexopi
Wait I thought for the one being above the x axis you work out te min y value and show its greater than 0.

At least that's what I've seen on past mark schemes?


Yes that's what I did, I found the turning point which shows that that the minimum point of Y is a positive and is therefore above the x-axis.
Original post by jpetersgill
By that you mean k>14/3 ? That's what I got


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yep
i cant remember the equation but the answer was (x-2)^2+1 simply multiply the thing out to get the original equation
I hated the binomial expansion question and finding the values of K!!!! I think I flopped 😞


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Bruhh
10
Original post by robin168
I completely agree, i absolutely love when they give you 14marks for the graph questions! Just praying that the induction question isnt too tricky!



I like the induction questions since if you don't get the result you're expecting you know you've gone wrong. Plus you get 2 marks for writing 2 sentences :biggrin:
Original post by DOPECYCLIST
yep (-2,1) was the minimum point for the last question. you needed it for the last question to work out K btw that's was 5
22 root 2 was also right
(0,3) was right and so is (0,7). you worked it out by putting x and y equal to 0 separately to find X and Y respectively.
question 12(i) required you to find K by putting the quadratic equal to Zero. and solving to find K

It was (0,-3) and (0,7) according to my maths teacher
Thank you

Dont remember some of my answers but it seems I didn't fail too much
Relative to other papers, how hard do you think this was?
I'm guessing 59/72 for A


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Original post by Bruhh
I like the induction questions since if you don't get the result you're expecting you know you've gone wrong. Plus you get 2 marks for writing 2 sentences :biggrin:


Yes me too, however you dont get those two marks unless youve got the previous bit right:frown: or atleast most of it right!
Original post by jakoblauritzen
It was (0,-3) and (0,7) according to my maths teacher


yep ur right i don't check what i type what i write. (0,-3)
Original post by DOPECYCLIST
i cant remember the equation but the answer was (x-2)^2+1 simply multiply the thing out to get the original equation


Hang on wasn't there a 3 that you had to factorise out?
For the transformation question number 10, did everyone get that to get f(x) to g(x) it was f(x) - 36? Also once proving g(-1) was a root did anyone get that the 2 other roots were -1 again (repeated) and then 6?
What did people get for the triangle question which got you to form the equation 5x^2-4x-1=h^2?


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looks like i dropped about 4 or 5 marks, delighted
Original post by jpetersgill
What did people get for the triangle question which got you to form the equation 5x^2-4x-1=h^2?


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2+2root11 / 5 or 4+4root11 / 10
Original post by JamesExtra
Hang on wasn't there a 3 that you had to factorise out?


probs i cant remember everything bro. i know i got it right because i got 5 for the last question which was right i know that.

im mid way through my markscheme i will be about 30 minutes guys
I used Pythagoras also do I lose marks for nt simplifying my fractions? I don't think it asked us to do so anywhere?

I also mucked up my polynomials but couldn't figure out where so lost a few marks there
I got x = (2+sqrt(44))/5


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