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AQA A2 Mathematics MPC3 Core 3 - Wednesday 15th June 2016 [Official Thread] Watch

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    (Original post by medic1010101)
    Did anybody actually answer Q9 tho?😂
    Yes, just not the first part...but my answers looked way to simple :/
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    (Original post by C0balt)
    Answers I remember

    Area of OAB= (e^2+1)^2/e^3
    Volume=pi(-(ln3)^2 + 2ln3 + 4)
    p root q=-root5

    Range f(x) =<24ln2 - 8 (iirc)
    gg(x) =x

    Some *****y fraction somebody Posted for substitution


    Attached for show that secx+tanx=0.2

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    for the range, 24ln2 is the same as 8ln8 right?
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    (Original post by RUNSran)
    for the range, 24ln2 is the same as 8ln8 right?
    Yep
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    (Original post by RUNSran)
    for the range, 24ln2 is the same as 8ln8 right?
    Yeah it is


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    You can do 9a in three lines, using sec^2-tan^2=1 then completing the square and using the value they gave
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    (Original post by RUNSran)
    for the range, 24ln2 is the same as 8ln8 right?
    got the same as you incept for the area one.
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    (Original post by RUNSran)
    for the range, 24ln2 is the same as 8ln8 right?
    yes
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    Guys what were the questions? trying to remeber to get rough marks
    Q1 - three differentiations (out of 6)
    Q2 - Simpsons, itteration, and the alpha change in sign thing (out of ??)
    Q3 - x^2<5x-6 (out of 5)
    Q4 - Translate y=e^2x-5 (out of ??)
    Q5 - Find the range of f(x) and gg(x) (out of 7)
    Q6- The ln(3x) rotation thing (out of ??)
    Q7- ??
    Q8- U=4x-1 substiution (out of 7)
    Q9- Secx-tanx (out of 8)
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    ok so that was a difficult core 3 paper. I didnt struggle too much though!

    these were my answers

    1. differentiation

    2. numerical methods =1.51

    3. 1<<x>>2 x>>3

    4. stretch in x factor 1/2 flowed by translation (2.5,0)
    4b. i got point A(2e^-2+2,0) B(0,e+e^-1) line of intersection as y-e^-1=-e(x-2)/2 (couldnt put into form they wanted)

    5. f(x)<<1/2 ln(8) and gg(x)=x

    6. pi(4-ln(9)-(ln(3))^2)

    7. 3rt5/5

    8. 117/244

    9. cos(x)=-5/13
    9b. -32.4, -21.3

    i probally made some silly mistakes but im confident on most
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    That was solid. Think I did ok but question 9 and the prootq thing I couldn't do. 1.51 for the x^x estimate anyone?
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    (Original post by mypretendname)
    Guys what were the questions? trying to remeber to get rough marks
    Q1 - three differentiations (out of 6)
    Q2 - Simpsons, itteration, and the alpha change in sign thing (out of ??)
    Q3 - x^2<5x-6 (out of 5)
    Q4 - Translate y=e^2x-5 (out of ??)
    Q5 - Find the range of f(x) and gg(x) (out of 7)
    Q6- The ln(3x) rotation thing (out of ??)
    Q7- ??
    Q8- U=4x-1 substiution (out of 7)
    Q9- Secx-tanx (out of 8)
    You've missed out the solving modulus Q4 I think


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    What did people get for estimate X^x, i got around 2.27 but my calculator gave me 1.5 something...

    Apart from that, dropped 6 marks on 9a, the triangle, couldn't simplify it to the form, and ggx cus im a retard. Hoping for 65 plus now to get around 95 ums, and hope I get 90ish c4.
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    (Original post by Fudge2)
    That was solid. Think I did ok but question 9 and the prootq thing I couldn't do. 1.51 for the x^x estimate anyone?
    I had 1.51
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    (Original post by Busted838)
    ok so that was a difficult core 3 paper. I didnt struggle too much though!

    these were my answers

    1. differentiation

    2. numerical methods =1.51

    3. 1<<x>>2 x>>3

    4. stretch in x factor 1/2 flowed by translation (2.5,0)
    4b. i got point A(2e^-2+2,0) B(0,e+e^-1) line of intersection as y-e^-1=-e(x-2)/2 (couldnt put into form they wanted)

    5. f(x)<<1/2 ln(8) and gg(x)=x

    6. pi(4-ln(9)-(ln(3))^2)

    7. 3rt5/3

    8. 117/244

    9. cos(x)=-5/13
    9b. -32.4, -21.3

    i probally made some silly mistakes but im confident on most
    One of your trig values is wrong, or mine , -21.3 and -88.7 i had -root5, gg(x)=1 and some other conflicting answers that i cba to type
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    (Original post by Busted838)
    ok so that was a difficult core 3 paper. I didnt struggle too much though!

    these were my answers

    1. differentiation

    2. numerical methods =1.51

    3. 1<<x>>2 x>>3

    4. stretch in x factor 1/2 flowed by translation (2.5,0)
    4b. i got point A(2e^-2+2,0) B(0,e+e^-1) line of intersection as y-e^-1=-e(x-2)/2

    5. f(x)<<1/2 ln(8) and gg(x)=x

    6. pi(4-ln(9)-(ln(3))^2)

    7. 3rt5/3

    8. 117/244

    9. cos(x)=-5/13
    9b. -32.4, -21.3

    i probally made some silly mistakes but im confident on most
    I agree with 2,4,6,8,9, the rest I can't remember , -sqrt5 at some point
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    (Original post by ThusSpakeAlex)
    I had 1.51
    Awesome
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    I sat the test today and took a look at the past grade boundaries / 100 UMS. I reckon the grade boundaries will be something along the lines of

    100 UMS - 70 (maybe 69)
    A* - 62
    A - 55
    B - 51
    C - 46
    D - 41
    E - 36
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    (Original post by Busted838)
    ok so that was a difficult core 3 paper. I didnt struggle too much though!

    these were my answers

    1. differentiation

    2. numerical methods =1.51

    3. 1<<x>>2 x>>3

    4. stretch in x factor 1/2 flowed by translation (2.5,0)
    4b. i got point A(2e^-2+2,0) B(0,e+e^-1) line of intersection as y-e^-1=-e(x-2)/2 (couldnt put into form they wanted)

    5. f(x)<<1/2 ln(8) and gg(x)=x

    6. pi(4-ln(9)-(ln(3))^2)

    7. 3rt5/5

    8. 117/244

    9. cos(x)=-5/13
    9b. -32.4, -21.3

    i probally made some silly mistakes but im confident on most
    cosx was -2/5.2
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    (Original post by ThusSpakeAlex)
    One of your trig values is wrong, or mine , -21.3 and -88.7 i had
    I got -21.3 and -88.7 too, how did you get 3 root 5 /3
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    (Original post by RUNSran)
    cosx was -2/5.2
    It simplifies.
 
 
 
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