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Edexcel Maths FP1 UNOFFICIAL Mark Scheme 19th May 2017

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    (Original post by robinhood111)
    for the matrices question how many marks do i lose if i only got 9/2 ???
    It'll probably be one mark as the question specified finding the "values" so finding one value probably reduces the mark by one. I can't remember how many marks it was out of now though so it could also be two. I doubt it'll be more than that though.
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    (Original post by blurred)
    For the divisible by 19 proof question I brought the 3^-2 down and multiplied f(k) by 27 then minused it from f(k+1) to eliminate the 3^k.I was able to prove it was divisible by 19 so would I still get full marks even if it's not the main method
    I hope so as I went about it the same way
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    Did the same thing, pretty sure its fine my teacher at least told me so

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    Does anyone remember the actual question for the divisibility proof by induction? I think it was 3 to the power something plus 2 to the power something, and it had to be divisible by 19.
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    (Original post by Charles Omer)
    It'll probably be one mark as the question specified finding the "values" so finding one value probably reduces the mark by one. I can't remember how many marks it was out of now though so it could also be two. I doubt it'll be more than that though.
    It was out of 5 marks :'((((((((((((((((((((
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    (Original post by cricketoo567)
    Does anyone remember the actual question for the divisibility proof by induction? I think it was 3 to the power something plus 2 to the power something, and it had to be divisible by 19.
    Hopefully this helps.
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    (Original post by glad-he-ate-her)
    Am i the only one who forgot the sum for 2 to the power of r-1 from c2 so manually wrote out all 12 terms :clap2:such mathematical elegance
    apparently you wont get marks for this?
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    (Original post by robinhood111)
    It was out of 5 marks :'((((((((((((((((((((
    I'm guessing it'll be one or two marks. The working out will be worth three probably. Hopefully it's just one.
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    (Original post by KingsAlpaca)
    My Answer for FP1 2017,
    1. ST 6.45
    2. (3/10, 1/10
    -2/5, 1/5)
    (2,1
    1,-4)
    3. y=x/2 xy=16 (4sqrt(2), 2sqrt(2)) and (-4sqrt(2),-2sqrt(2))
    4. (2p+12)/13 + (3p-8)i/13 p=20 lambda=+-4sqrt(5)
    5. (12-5p, 4p-10
    6p-15, 12-5p)
    p=3/2 k=15/2 a=9/2 or -27/2
    6. -3-2i a=2 b=-11
    7. ST (-a, -3a/2) s=15a^2/16
    8. ST k=2/9
    9. ST ST

    Hi do u know if I missed the answer a=-27/2 how many marks will I lose? Many thx
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    Can someone explain the matrix question for ii
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    (Original post by Apachai Hopachai)
    I have a A*A*A university offer, should I hope that you guys got more than me or something?
    What course and university is that for?
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    (Original post by Apachai Hopachai)
    That may be true, but should I tell you another truth?

    You failed that exam didn't you?
    Nope my answers align with the markscheme except for one 3 marker which I would loose 2 marks on
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    Did u have to use a formula to work out the sum of 2^r-1 or is it fine if I just wrote the answer
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    (Original post by Edmar Hadad)
    Nope my answers align with the markscheme except for one 3 marker which I would loose 2 marks on
    Then let's pray together that 100 UMS is 73 or higher
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    It's only people who are insecure feel the need to boast about there results to people they have never met. 👆🏿
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    (Original post by blurred)
    Did u have to use a formula to work out the sum of 2^r-1 or is it fine if I just wrote the answer
    You mean the sum formula?

    Did you go through the tedious workings of (1 + 2 + 4 + ...) ?

    If you did, you will get the marks
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    (Original post by Apachai Hopachai)
    Then let's pray together that 100 UMS is 73 or higher
    best of wishes on your offer .
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    (Original post by Apachai Hopachai)
    Cambridge A*A*A 1,1

    Warwick A*A*A 1

    Imperial blah blah
    how comes you're doing c1 this year if you're A2? doing maths fm physics and step in one year?
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    (Original post by Elliott M)
    For the Area FXD question:
    tangent has equation yq= x+ aq^2
    at directrix, x= -a so yq = -a + aq^2 so y = (-a + aq^2)/q
    F(a,0) X(-0.25a,0) D(-a, (-a + aq^2)/q)
    Area of FXD = 1/2 x base x height = 0.5 x (a+0.25a) x modulus of ((aq^2 - a)/q)

    Lets suppose the y coordinate of D is -5, length is 5, so times y coordinate of D by -1 to give magnitude.

    Area = 0.5 x (1.25a) x ((a - aq^2)/q) = 0.625 x q^-1 x (a^2 - (a^2 x q^2))
    I got it all in terms of q, as q is a parameter and everything in the question is algebra
    I did the exact same you mate haha. Except from I found q=1/2. But didn't think it was a constant variable. Let's hope we get plenty of method marks
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    (Original post by Apachai Hopachai)
    You mean the sum formula?

    Did you go through the tedious workings of (1 + 2 + 4 + ...) ?

    If you did, you will get the marks
    Well I just put it into a calculator. Only took about 30 secs. I didn't write that out though. I just wrote the answer of around 4000
 
 
 
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