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    Hey, does anyone have this exam tomorrow? How do you think it'll go?
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    Yess any suggestions on what will come up?
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    Does anymore remember their answer to the fish drawing question? I didn't get any x^2 terms so I just said b=0

    The question was

    X=3t^2 Y=3t-t^3

    Can be written as Cartesian equation

    Y^2= ax^3+bx^2+cx

    Find a, b and c
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    What were the answers for questions about the binomial and the partial fractions. They were question 4 and 3.
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    (Original post by Conor3669)
    What were the answers for questions about the binomial and the partial fractions. They were question 4 and 3.
    A was -1/2 and N was 1/2 for the binomial anyway
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    I didn't get any x^2 terms either
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    I didn't get an x^2 term either!
    As for the partial fractions A was 1 B was 1 and C was -2 if I remember correctly
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    The partial fractions was 1/(x+2) - 2/(x+1)^2

    The Cartesian equation was a = 1/27, b = -2/3 and c = 3


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    (Original post by Hollienikita)
    The partial fractions was 1/(x+2) - 2/(x+1)^2

    The Cartesian equation was a = 1/27, b = -2/3 and c = 3


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    Yeah I got the same
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    What did everyone get for the differentiation?


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    I got b = 0, how did everyone find the binomial expansion. Didn't get any answer but wrote down an incorrect method
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    (Original post by jamesjmillar)
    I got b = 0, how did everyone find the binomial expansion. Didn't get any answer but wrote down an incorrect method
    The binomial expansion was:

    (1+ax)^n = 1+anx + (n(n-1))/2! (a^2)(x^2)

    Or something along these lines I can't remember the question exactly or what each term equaled but then I just set an=(x term)
    n=(x term coefficient)/a
    And then worked it out I think.
    I did get a=1/2 and b=-1/2

    For the normal to the curve I did tangent, how many marks do you think I'll lose because of that?
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    (Original post by SandraMR)
    The binomial expansion was:

    (1+ax)^n = 1+anx + (n(n-1))/2! (a^2)(x^2)

    Or something along these lines I can't remember the question exactly or what each term equaled but then I just set an=(x term)
    n=(x term coefficient)/a
    And then worked it out I think.
    I did get a=1/2 and b=-1/2

    For the normal to the curve I did tangent, how many marks do you think I'll lose because of that?
    I did the tangent too 😩 hoping it won't be a lot of marks!


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    Does anyone have an unofficial mark scheme?
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    The answer was (9,0) I think for the Cartesian question
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    (Original post by Annemary)
    The answer was (9,0) I think for the Cartesian question
    sounds good! That's what I got


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    I assume everyone here is doing C4 on the 26th too?


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    (Original post by Keith.)
    I assume everyone here is doing C4 on the 26th too?


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    Yep!




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    Hey everyone, I just made this thread for Core 4 on Tuesday.
 
 
 
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