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AQA A2 Mathematics MPC4 Core 4 - 9th June 2015 [Discussion & unofficial markscheme] Watch

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    God bless everyone. All the best!
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    good luck, can't be worse than c3!
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    (Original post by amyrah)
    good luck, can't be worse than c3!
    Don't jinx it lol


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    Good luck ya'll!
    Any last minute tips for forming differential equations?
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    (Original post by CD223)
    Yes that's correct. But if they're perpendicular the direction of the vectors doesn't matter


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    Oh ok thanks! For differentiak equatiobs could they ask us to form one which is inversely proportional? :/
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    (Original post by HennersPD)
    Oh ok thanks! For differentiak equatiobs could they ask us to form one which is inversely proportional? :/
    Possibly'


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    What equations do we need to know? Is it just double angle identities and the ones from core 3?
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    (Original post by Starcrossed123)
    What equations do we need to know? Is it just double angle identities and the ones from core 3?
    And triple angle?
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    (Original post by saad97)
    And triple angle?
    What triple angle? What are they?
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    (Original post by hamza3256)
    Do we need to memorise the equation for sin3x, cos3x, and tan3x?
    Whaaaat? What are the equations for these? someone write them here please?
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    (Original post by matthew6665)
    Whaaaat? What are the equations for these? someone write them here please?
    Triple angles:
    Sin3x = 3sinx - 4sin³x
    Cos3x = 4cos³x - 3cosx
    Tan3x = 3tanx - tan³x / 1 - 3tan²x
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    Just use 2x and x for triple angle thdn use double angle for the 2x


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    HYPE!
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    How was it?

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    (Original post by ubisoft)
    How was it?

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    It went alright. didn't like question 7
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    what was the coordinates of C?
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    Omg I made a stupid mistake, the question where you had to show that h(x) was decreasing, I accidentally did some weird stuff by finding the second derivative how many marks would I have lost? I did find an equation for the first derivative though
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    I got -9 -2 18, pretty sure I'm wrong tho because I screwed up d
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    How was it?


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    (Original post by macai)
    I got -9 -2 18, pretty sure I'm wrong tho because I screwed up d
    I got the same


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