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    (Original post by Further)
    (x-6)(x+5)=0
    x=6
    x=-5
    How many marks was this question?
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    How did you guys do the proof question? 2cot^2(2A) + tan(A) = cot(A)
    Kept getting stuck for some reason, wasn't sure where I was wrong
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    How the **** did I mess up q1a? I did it twice and got like x=1. At least I got b right. So how many marks would I lose for adding them wrong maybe?
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    if you can, could you please put the number of marks for each question, thanks
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    I used -90 and 90 in the arcsin sketch would i lose a mark for that?
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    i bloody skipped 8b so dumb..can anyone tell me if it was difficult
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    I got a different answer for 5i.
    Does anyone remember the qs?
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    i couldn't do part a so i thou to come back to it in which i forgot ahhh
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    isnt 1/2sin4x = 2cosec4x? not 1/2cosec4x ?
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    Failed haha
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    can someone PLEASE remind me what was Q5 today I might've skipped that questions I can feel a panic attack coming
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    question for 5i??
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    Does anyone remember what each questions mark was?
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    (Original post by veldt127)
    I'm not 100% sure on all of these, but I think most are correct.

    1.
    A -5, 6
    B 6

    2.
    A (20-4x^2)/(x^2+5)^2 Might not be simplest form
    B >sqrt(5), <-sqrt(5)

    3.
    A R= sqrt(5)
    a= 26.57°
    B 33.0°, 273.9°
    C 86.1°

    4.
    Ai 21
    ii ln(2.5)
    iii 25
    B Show that question
    C 1.4368, 1.4373
    D Show the root was in [1.4365, 1.4375]

    5.
    i 0.9463
    ii 0.5cosec(4Y)

    6.
    A A=3, B=4
    B Normal eqn. -0.5x + 17.5

    7.
    A graph of arcsin, sort of a rotated S shape. Went through (0,0), (-1,-pi/2), (1,pi/2)
    B -1-0.5sqrt(3)

    8.
    A Trig proof
    B -2.848, -1.277, 0.294, 1.865

    9.
    A 6.740 - dose after 4 hours
    B show that dose equalled a value after 7 hours
    C 5ln(2 + 2e^-1)
    A = 5, B = 2

    Sorry about the formatting, I'll try to improve it once I'm home.
    I agree wholeheartedly with everything. I got stuck on the last bit of 9c) however because I got 5ln(1(2 +2e^-1)) for some bizzarre reason, but that was the only issue

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    (Original post by O$car)
    can someone PLEASE remind me what was Q5 today I might've skipped that questions I can feel a panic attack coming
    i skipped question 8 in the same boat..**** our lives
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    (Original post by theri mass)
    3b) denominator was 2cos(theta) - sin(theta) -1,
    3c) 2cos(theta)+sin(theta)-1

    You need to switch sign for cos(theta+Value)=59....

    to cos(theta-Value)=59....
    Do you know how many marks 3c was worth? I didn't notice the sign change
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    (Original post by PhoenixBlaze123)
    How did you guys do the proof question? 2cot^2(2A) + tan(A) = cot(A)
    Kept getting stuck for some reason, wasn't sure where I was wrong
    LHS:
    2/tan2A +tanA
    2(1-tan^A)/2tanA +tanA
    (1-tan^2A+tan^2A)/tanA
    1/tanA
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    (Original post by veldt127)
    I'm not 100% sure on all of these, but I think most are correct.

    1.
    A -5, 6
    B 6

    2.
    A (20-4x^2)/(x^2+5)^2 Might not be simplest form
    B >sqrt(5), <-sqrt(5)

    3.
    A R= sqrt(5)
    a= 26.57°
    B 33.0°, 273.9°
    C 86.1°

    4.
    Ai 21
    ii ln(2.5)
    iii 25
    B Show that question
    C 1.4368, 1.4373
    D Show the root was in [1.4365, 1.4375]

    5.
    i 0.9463
    ii 0.5cosec(4Y)

    6.
    A A=3, B=4
    B Normal eqn. -0.5x + 17.5

    7.
    A graph of arcsin, sort of a rotated S shape. Went through (0,0), (-1,-pi/2), (1,pi/2)
    B -1-0.5sqrt(3)

    8.
    A Trig proof
    B -2.848, -1.277, 0.294, 1.865

    9.
    A 6.740 - dose after 4 hours
    B show that dose equalled a value after 7 hours
    C 5ln(2 + 2e^-1)
    A = 5, B = 2

    Sorry about the formatting, I'll try to improve it once I'm home.
    Thanks for doing all this! Do you know what the marks for each question were?
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    If you want working, let me know the question and I'll give it a go; this is all I could remember.

    Q1-4, 9 Working
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  1. File Type: pdf C3 MS.pdf (123.0 KB, 1910 views)
    • Thread Starter
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    (Original post by fishs003)
    Thanks for doing all this! Do you know what the marks for each question were?
    Only one I remember is 9 being 2, 2 and 4
 
 
 
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