Edexcel IAL F1 exam, 20th May 2016

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    How did he exam go guys? How did you do the Matrices question where det(A)>0 ?
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    I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

    for det A >0 i completed the square of the quadratic and at the end there was a plus 2.
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    (Original post by MoeHat)
    I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

    for det A >0 i completed the square of the quadratic and at the end there was a plus 2.
    hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.
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    (Original post by neeldodh1)
    hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.
    nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
    All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh
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    (Original post by MoeHat)
    nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
    All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh
    nope i didnt know what to do and i was left with only 5 mins or else i'd have figured it out. everythinh else was smooth apart from proving and matrices
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    yah k =5
    b2-4ac i got -8 so i said det a>0
    anyone gt root2 /2 fr dat z coefficient question as an answer
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    n is dere an unofficial markscheme out dere? if so plz add da link ...
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    (Original post by saitama kun)
    yah k =5
    b2-4ac i got -8 so i said det a>0
    anyone gt root2 /2 fr dat z coefficient question as an answer
    which question was the "root2 /2 fr dat z coefficient question as an answer"
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    (Original post by saitama kun)
    n is dere an unofficial markscheme out dere? if so plz add da link ...
    i will be able to get it by monday or tuesday
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    (Original post by neeldodh1)
    which question was the "root2 /2 fr dat z coefficient question as an answer"
    dere was dis quadratic equation of z4 where we had to find its 4 roots where 2 of dem were 3+-8i i think cant recall clearly
    wat was da other 2 roots
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    (Original post by saitama kun)
    dere was dis quadratic equation of z4 where we had to find its 4 roots where 2 of dem were 3+-8i i think cant recall clearly
    wat was da other 2 roots
    +root 3 i and -root 3 i
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    kk i think dat answer is correct
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    In the complex number question, what did u get for z? I got z is 1/6 plus 1/2 i
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    (Original post by neeldodh1)
    How did he exam go guys? How did you do the Matrices question where det(A)>0 ?
    (Original post by MoeHat)
    I found the exam horrible, minimum 15 marks lost. Proof by induction part ii was not even attempted hahaha

    for det A >0 i completed the square of the quadratic and at the end there was a plus 2.
    (Original post by neeldodh1)
    hahahaha i did attempt it however i was not able to prove it. i did b^2 - 4(ac)>0 which im already guessing is wrong.
    (Original post by MoeHat)
    nigglett that method shows that the quadratic has 2 real roots not greater than zero xD
    All in all it was horrible. Did you do the y=kx matrix thingy? gods sake.. ughh
    (Original post by neeldodh1)
    nope i didnt know what to do and i was left with only 5 mins or else i'd have figured it out. everythinh else was smooth apart from proving and matrices
    (Original post by saitama kun)
    yah k =5
    b2-4ac i got -8 so i said det a>0
    anyone gt root2 /2 fr dat z coefficient question as an answer
    (Original post by saitama kun)
    n is dere an unofficial markscheme out dere? if so plz add da link ...
    (Original post by neeldodh1)
    which question was the "root2 /2 fr dat z coefficient question as an answer"
    (Original post by neeldodh1)
    i will be able to get it by monday or tuesday
    (Original post by saitama kun)
    dere was dis quadratic equation of z4 where we had to find its 4 roots where 2 of dem were 3+-8i i think cant recall clearly
    wat was da other 2 roots
    (Original post by neeldodh1)
    +root 3 i and -root 3 i
    (Original post by saitama kun)
    kk i think dat answer is correct
    (Original post by MoeHat)
    In the complex number question, what did u get for z? I got z is 1/6 plus 1/2 i
    I have written solutions here
    http://www.thestudentroom.co.uk/show...3#post65033993
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    (Original post by kprime2)
    I have written solutions here
    http://www.thestudentroom.co.uk/show...3#post65033993
    thank you
 
 
 
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