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OCR MEI FP1 Thread - AM 20th May 2016

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Original post by TheSurrealTV
What did you get for f(w/j) question? and did you get 0.008 on the last question


I got 0.5j , -2j , -3-2j , -3+2j or something like that haha, I 0.008 but ran out of time and didn't write it down :frown:
Original post by TheSurrealTV
What did you get for f(w/j) question? and did you get 0.008 on the last question

i think i got like 0.00693 or something but i was rushing it so probably made a mistake
I got that too SurrealTV. Man this paper was bloody difficult.
i got p as 3/2
a as 1/2 and b as -2
what's the answers for the limitation question?
Original post by TheSurrealTV
what's the answers for the limitation question?


i put leans towards 0 as it was like an x^2/x^3
Original post by harpreetrai3
i got p as 3/2
a as 1/2 and b as -2


I got that as well :smile:
and the argand diagram the 2 intersect at like -3 + 9j
Reply 48
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NickC98
2
Sure was one damn tough exam... What are you lot thinking the grade boundary for an A would be roughly? Seeing as the hardest past paper I've done was Jan 2013 and had 48/72 for an A would you think it would be around 50/72?
This was the hardest exam I have ever done. I missed out 22 marks due to a lack of time. I didn't even do question 9. On the plus side (if there is one) I think that I got 39/72 which may end up to be a B. The January 2013 paper required only 43/72 for a B (see http://www.ocr.org.uk/i-want-to/convert-raw-marks-to-ums/) and that paper was like doing a year 6 SATs maths paper compared to this one. Therefore, the grade boundary for a B is should AT LEAST be 4 marks lower.

I'm in year 12 doing AS Further Maths which puts me at a disadvantage to all the Y13s. However, I can (and will) resit it next year.
Original post by harpreetrai3
and the argand diagram the 2 intersect at like -3 + 9j


i got -3+9j as well but was |z-(3+4j)|>=5 or |z-(3+4j)|<=5
Did you guys get A = 6 and B = 51?
Reply 52
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NickC98
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Original post by Sweetroll
Did you guys get A = 6 and B = 51?


Yep! Phew
Original post by TheSurrealTV
i got -3+9j as well but was |z-(3+4j)|>=5 or |z-(3+4j)|<=5


i think it was less than or equal to 5 because i shaded in on the circle
Anyone else get -5/2 and -2/5 for the roots of that polynomial?
Original post by Cadherin
Anyone else get -5/2 and -2/5 for the roots of that polynomial?


i got 1/2 and -2 because they added to make -3/2 and multiplied to make -1??
Original post by harpreetrai3
i got 1/2 and -2 because they added to make -3/2 and multiplied to make -1??


Oh dear, I thought they multiplied to give 1??
Reply 57
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NickC98
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Original post by harpreetrai3
i think it was less than or equal to 5 because i shaded in on the circle


Pretty sure it was more than or equal to so it was the area outside the circle :frown:
Think I've been stupid and left the answer to the last question as 0.00816 or something? Didn't realise 0's at the front classed as sig figs lol
**** hopefullt its ft and i only lose 1

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