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    (Original post by Don Pedro K.)
    We wanted volume not area
    Yeah that's what I meant sorry, volume as 512 and then the other thing as 1024/5
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    for Question 6, on the prove that the integral = k (integral) sin^x i got 1/8 (integral) sec^2x.

    Where did i go wrong??

    and how many marks would i get for part B for carrying the k = 1/8 instead of using k=8?
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    (Original post by Sapereaude54)
    Lol, lost all 5 marks on that question...shame
    Also for the value of lambda that I obtained was 32, I know this is wrong know but everything else I got was correct.
    Do you think the error will be carried forward to the next question.
    I believe this was the last question on the paper,
    Also, can you edit your comment and add: [spoiler] [ /spoiler] (without the space on the second one) around my working out please?
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    what UMS is 71 or 72 /75 going to be for this?
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    (Original post by Student403)
    Interesting.

    I wrote because mod l2's direction = 5sqrt2 and we want lengths of +-2sqrt2, then we must multiply the line equation direction by factors of +-2/5
    I guess that works aswell? Was you able to get the required answers?
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    (Original post by edothero)
    I believe this was the last question on the paper,
    Also, can you edit your comment and add: [spoiler] [ /spoiler] (without the space on the second one) around my working out please?
    Sorry for the confusion, I meant the lambda value integration question.
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    (Original post by edothero)
    I guess that works aswell? Was you able to get the required answers?
    Yeah of course. I came out of the exam wondering why that was worth 5 marks
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    How many marks is q3? Differentiated it right but rearranged it completely wrong and therefore got part b entirely wrong.. how many marks would i lose?
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    Wasn't the volume question done by finding the volume under the big rectangle and taking it away from the volume under the curve?
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    Will I get method marks for 8D) (Area question), if i had cos(theta)= -1/5 and that lead to the wrong area?
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    does anyone have the questions and/or workings|?
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    (Original post by Mattematics)
    Pretty sure every answer is now correct. Enjoy

    Question 1:
    Spoiler:
    Show

    Question 2:
    Spoiler:
    Show

    Question 3:
    Spoiler:
    Show
    Question 4:
    Spoiler:
    Show

    Question 5:
    Spoiler:
    Show
    Question 6:
    Spoiler:
    Show
    Question 7:
    Spoiler:
    Show
    Question 8:
    Spoiler:
    Show

    cos(theta) was 4/5. Left it out by mistake.
    for 8a if you write it in vector form u lose the mark because they asked for coordinates
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    For the last one of last question did people get +- 2/5 for lamda?
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    (Original post by AJtheconfusedcat)
    for 8a if you write it in vector form u lose the mark because they asked for coordinates
    thats not true, mark schemes usually accept either.
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    for Q7(c) I did :

    Volume =pi X integral (between 17/2 and 1/2) 8 dx - pi X integral (between 17/2 and 1/2) y^2 dx

    So for the volume of the cylinder the limits should have been 17/2 and 0 (not 1/2).
    So my answer ended up being :

    Volume = 544pi - 32pi - 1024pi/5

    How many marks do you think I'll lose.

    Overall though paper was decent. Only marks I think I lost were this one and last question on 8
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    (Original post by Student403)
    Yeah of course. I came out of the exam wondering why that was worth 5 marks
    It was odd to say the least.
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    swear the 8c is 2 rt 2 not 2?
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    If I put '10 hours and 33 minutes' for question 4, would I get all the marks? Thanks for the unofficial mark scheme by the way- really helpful
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    (Original post by coolguy123456)
    For the last one of last question did people get +- 2/5 for lamda?
    i did but somehow only got one of the coordinates correct.
    i got (-1 5 4) and (3 3.4 0.8)

    can someone tell me my mistake thx
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    wait wasnt the ditance 2 root 2 for AP?
 
 
 
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