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Edexcel A2 C4 Mathematics June 2016 - Official Thread Watch

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    (Original post by Anon_98)
    Thank you again, lots! Sorry, Prsom. (':
    You're welcome.
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    (Original post by XxKingSniprxX)
    I agree, especially when you lay your work out ever so neatly and
    the entire method etc is correct until you realise that your earlier apart
    was supposed to be '+' or ' - '. :shot:
    Guess that's one of the benefits of never having neat work. :lol:
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    PhysicsMathsTut what would 65/75 be for the mock paper (c4) on your website

    https://a086a5a2f39bda93734c56a63fab...%20Edexcel.pdf

    thanks in advance
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    When converting trig parametric equations to cartesian, would you get marks for comparing sides of a triangle instead of using the  sin^2x + cos^2x=1 identity? Because the mark scheme I'm reading only uses the identity.
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    (Original post by NotNotBatman)
    When converting trig parametric equations to cartesian, would you get marks for comparing sides of a triangle instead of using the  sin^2x + cos^2x=1 identity? Because the mark scheme I'm reading only uses the identity.
    Yeah, you would. That's perfectly fine.
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    I've done my first C4 paper and got 66/75; I should be getting into the 70's in no time considering my first c3 was quite a bit lower, but now I'm averaging 71/75.

    And I still haven't looked at the binomial expansion chapter, just went off the formula (got it wrong though :P )
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    (Original post by NotNotBatman)
    I've done my first C4 paper and got 66/75; I should be getting into the 70's in no time considering my first c3 was quite a bit lower, but now I'm averaging 71/75.

    And I still haven't looked at the binomial expansion chapter, just went off the formula (got it wrong though :P )
    Not bad at all, well done!
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    (Original post by Zacken)
    Not bad at all, well done!
    Thanks!
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    Can anyone help me with the top question from the review exercise in the c4 book
    Thanks
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    (Original post by boyyo)
    Can anyone help me with the top question from the review exercise in the c4 book
    Thanks
    What have you tried?
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    (Original post by Zacken)
    What have you tried?
    well i started with this and then I know that OP is 0A+ 0.25(AB),
    but thats where Im confused because the ratio is AP=3BP and when I do a quater of AB i get fraction asnwers
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    I meant to add this picture
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    (Original post by boyyo)
    well i started with this and then I know that OP is 0A+ 0.25(AB),
    but thats where Im confused because the ratio is AP=3BP and when I do a quater of AB i get fraction asnwers
    Call P (xi + yj + zk) then compute AP and 3BP then equate i,j and k components.
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    (Original post by Zacken)
    Call P (xi + yj + zk) then compute AP and 3BP then equate i,j and k components.
    Ok, but does it matter how I draw the diagram, as the solution bank drew it differently to mine?
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    (Original post by boyyo)
    Ok, but does it matter how I draw the diagram, as the solution bank drew it differently to mine?
    At a glance, your diagram seems fine - although a bit weird because AP should be the smaller length, but that doesn't really matter.
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    (Original post by boyyo)
    Can anyone help me with the top question from the review exercise in the c4 book
    Thanks
    (Original post by Zacken)
    At a glance, your diagram seems fine - although a bit weird because AP should be the smaller length, but that doesn't really matter.
    The question says that P is on AB produced. This means that you have to extend the line AB beyond B and P is on the new bit of line.
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    Im resitting C1 and C2, I'm hoping to get around 90% in them this year, C3 is ok, but I'm struggling with C4 vectors and D1 that we haven't finished yet.
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    (Original post by Zacken)
    At a glance, your diagram seems fine - although a bit weird because AP should be the smaller length, but that doesn't really matter.
    (Original post by tiny hobbit)
    The question says that P is on AB produced. This means that you have to extend the line AB beyond B and P is on the new bit of line.
    Oh yh ok I see, thanks guys
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    hey does anyone have a link to any good vectors resources/difficult vector questions?
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    (Original post by joodaa)
    hey does anyone have a link to any good vectors resources/difficult vector questions?
    Phy&Math
 
 
 
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