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    (Original post by strikerextreme)
    Attachment 227973

    for this question i solved the diff equation but my answer wasnt expressed as r=

    how many marks would i lose ?
    i got the c value
    i done the same...i left it as 2/3 r something.... and not simplify it. i got c as 9/5.
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    (Original post by strikerextreme)
    Attachment 227973

    for this question i solved the diff equation but my answer wasnt expressed as r=

    how many marks would i lose ?
    i got the c value
    1 mark.
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    Does any one remember how many marks q9 was???
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    (Original post by ActaNonVerba)
    Didn't it say acute angle, which would be 180-your answer? I put both down just in case
    I don't think it specified acute.

    (Original post by strikerextreme)
    Attachment 227973

    for this question i solved the diff equation but my answer wasnt expressed as r=

    how many marks would i lose ?
    i got the c value
    You'd probably only lose 1 for not being in the correct form.
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    Just That is all.
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    (Original post by Kayoz)
    Does any one remember how many marks q9 was???
    3+4+2 = 9 marks in total
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    (Original post by SJ12345)
    Did anyone get 0.136 on any part of question 10?
    I got that for the decimal estimate for the value of 100/729, 10ii.
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    Right so for 7. (ii). I had the 2 vectors r=(-1, -3, -9) and s=(1, 1, 5) but I went in to auto pilot and did r x s, got -1*AD, will I get marks for using alternate method?
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    (Original post by kark94)
    3+4+2 = 9 marks in total
    thx!
    i prob lost 4 marks for stupidly re-arranging to get t=-1
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    What do people think the volume of the pyramid was?
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    what do you guy think about the grade boundaries?

    I'm hoping for 64 for A* :L
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    (Original post by XingBairong)
    what do you guy think about the grade boundaries?

    I'm hoping for 64 for A* :L
    Im thinking they will be semi low, compared to other papers I thought it was quite hard, 64 will easily be A* I reckon.
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    for the parametric question i gt dy/dx = 2-2/t

    i then did dy/dx = 0, and got t=1.

    i then subbed it back into the parametric equations to get stationary points.

    i then found dy/dx for t=2 and t=-1.

    i the said point was a max point...

    do you fink thats rigght, any one else do that?????
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    (Original post by junaid_k17)
    for the parametric question i gt dy/dx = 2-2/t

    i then did dy/dx = 0, and got t=1.

    i then subbed it back into the parametric equations to get stationary points.

    i then found dy/dx for t=2 and t=-1.

    i the said point was a max point...

    do you fink thats rigght, any one else do that?????
    t is 1 and it is the minimum point as the second derivative > 0.
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    also what do u fink a C grade will be, cuss i fink i gt 43/72????????????
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    What's the theory for q10 to get 1/10.. I made a random guess and it worked, but can someone explain how you would get 1/10.. And explain 10i) I couldn't do that
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    (Original post by ActaNonVerba)
    What's the theory for q10 to get 1/10.. I made a random guess and it worked, but can someone explain how you would get 1/10.. And explain 10i) I couldn't do that
    10i) was just expansion so you had x(1-x)^-3 and u expand the brackets first and multiply ur answer by x and you got the answer they asked for!
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    I made a really weird way of estimating 100/729, I multiplied by the denominator and just let x = 100/729. This is completely valid, but will this get me the marks?
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    (Original post by JimmyA*)
    The student room finding it ok is different to how the rest of the population found it
    Yeah i guess! Just hoping there's plenty of marks for working out haha
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    biggest, fail of my life. fingers crossed that the grade boundary for an a is about 30 percent, then i might have a chance of an a !
 
 
 
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