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OCR MEI AS Mathematics Core 1 13/05/2013

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Weird to know this but I think it's 3 part 2


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Someone start a core 2 thread for Friday!?


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Original post by krishkmistry
Someone start a core 2 thread for Friday!?


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done :smile:
Original post by krishkmistry
The rearranging bit - did anyone put the square root as positive because r was greater than 0 ?


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Original post by krishkmistry

I did, i talked to a few friends and they seemed confused :confused:
Reply 145
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whez
ahh i think i somehow read '12' as a letter 8b^3/4 god sake haha, oh well hopefully i will get one mark?!

Also for the very last question I put them equal to each other , then equal to zero, put the discriminant =0 and got K^2 - 6k = 0 so found k to be 0 or 6 . Did anyone else get this?!
Yes! *punches fist in air*

I felt that this paper was so easy and cool as opposed to January! XD
Reply 147
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whez
Original post by krishkmistry


Yea I did but i was doubting myself haha
Reply 148
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Daniel__
Anyone remember question two? It was a intersection question between two lines.
Yay :smile:


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Original post by Magenta96
done :smile:

Link me please ?


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Reply 151
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Deceived
For the very last question, did people get k=0 or k=4?

Thanks
You know the intersection question in question 10? (The first section B question ) Will you get away by writing that x=3root16 rather than 12? I wrote it last minute and my friend told me it simplified to 12? :/

I don't wanna lose that mark
Reply 153
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Alan786
Was the binomial expansion 5c3*4*64 which gives -2560
Reply 154
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jojo19apr
Original post by Sun_Bear
what did you guys get for the minimum value of y?


I think I got -7? had 3((x-1.5)^2 -7/3) so when multiplied out it was 3(x-1.5)^2-7
Or something to that effect, may have forgotten the exact numbers in the middle but definitely ended up with -7
Original post by jojo19apr
I think I got -7? had 3((x-1.5)^2 -7/3) so when multiplied out it was 3(x-1.5)^2-7
Or something to that effect, may have forgotten the exact numbers in the middle but definitely ended up with -7


Yes it was -7. I got that too.
Reply 156
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Deceived
Original post by Alan786
Was the binomial expansion 5c3*4*64 which gives -2560



Yeah, that's what I got.
Original post by krishkmistry
Link me please ?


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http://www.thestudentroom.co.uk/showthread.php?t=2349901&p=42596322#post42596322
Reply 158
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jojo19apr
Original post by PreppyNinja
You know the intersection question in question 10? (The first section B question ) Will you get away by writing that x=3root16 rather than 12? I wrote it last minute and my friend told me it simplified to 12? :/

I don't wanna lose that mark


May depend if they wanted it in it's simplest form, but technically it's the same value so you could have put anything equivalent to 12!
absolute trick of a question when you think you need to state the full coordinates - OCR will penalise that error but I got it right too - so glad I did a similar q in a past paper


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