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Will the real TeeEm please stand up! watch

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    (Original post by TeeEm)
    I need to look at it in detail ( I just came back from holidays a few hours ago) but I think it is correct.

    My solution is essentially the same, I just show more steps for the benefit of students, and I have used IBP which is essentially a variation on what you did at the end.
    Good to know. Thanks! :ahee:

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    (Original post by Krollo)
    Good to know. Thanks! :ahee:

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    a very good attempt.
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    6 days to A level results

    Question for Friday 07/08/15
    A Level Maths Upwards required


    and for those who want that little bit extra,
    A Level Maths Upwards required
    Attached Images
  1. File Type: pdf Q38, Friday 07-08-15, solution.pdf (87.8 KB, 53 views)
  2. File Type: pdf Q38, Friday 07-08-15, EXTRA, solution.pdf (247.4 KB, 43 views)
  3. File Type: pdf Q38, Friday 07-08-15.pdf (9.4 KB, 55 views)
  4. File Type: pdf Q38, Friday 07-08-15, EXTRA.pdf (17.9 KB, 50 views)
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    5 days to A level results

    Question for Saturday 07/08/15
    AS Level Maths Upwards required


    and for those who want that little bit extra,
    AS Level Maths Upwards required
    Attached Images
  5. File Type: pdf Q39, Saturday 08-08-15.pdf (11.1 KB, 51 views)
  6. File Type: pdf Q39, Saturday 08-08-15, EXTRA.pdf (17.3 KB, 46 views)
  7. File Type: pdf Q39, Saturday 08-08-15, solution.pdf (200.4 KB, 39 views)
  8. File Type: pdf Q39, Saturday 08-08-15, EXTRA, solution.pdf (169.5 KB, 43 views)
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    (Original post by TeeEm)
    ??
    You said that the solution was correct

    but the question was wrong...so surely the solution is therefore wrong for the intended question?

    if that makes sense...it probably doesn't
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    (Original post by Mutleybm1996)
    You said that the solution was correct

    but the question was wrong...so surely the solution is therefore wrong for the intended question?

    if that makes sense...it probably doesn't

    sure
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    Back again and stuck again lol. Right idea or no? Idea was to find where they intersect and work out distance from centre to there or something

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    For the extra did anyone get...
    Spoiler:
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    a. L/4
    b. 3L/4
    c. L/2
    d. -2L
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    (Original post by Joshthemathmo)
    For the extra did anyone get...
    Spoiler:
    Show
    a. L/4
    b. 3L/4
    c. L/2
    d. -2L
    I agree with the first three parts, for the last part I seem to be getting
    Spoiler:
    Show

    0 - dont you essentially have L - 9*(1/9)L?

    Not certain though.

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    (Original post by Krollo)
    I agree with the first three parts, for the last part I seem to be getting
    Spoiler:
    Show

    0 - dont you essentially have L - 9*(1/9)L?
    Not certain though.

    Posted from TSR Mobile
    It could very well be, where did the 9(L/9) come from?
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    i used the original summation and deduced L/3 and 8L/3 to get -2L.
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    (Original post by Fudge2)
    Back again and stuck again lol. Right idea or no? Idea was to find where they intersect and work out distance from centre to there or something

    Name:  image.jpg
Views: 109
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    start by drawing the relative positions of two circles and their common tangents
    (there are 5 positions having 4,3,2,1,0 common tangents)
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    (Original post by Krollo)
    I agree with the first three parts, for the last part I seem to be getting
    Spoiler:
    Show

    0 - dont you essentially have L - 9*(1/9)L?

    Not certain though.

    Posted from TSR Mobile
    (Original post by Joshthemathmo)
    For the extra did anyone get...
    Spoiler:
    Show
    a. L/4
    b. 3L/4
    c. L/2
    d. -2L
    First 3 both of you are correct.
    I think krollo is correct on the last one
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    (Original post by Joshthemathmo)
    It could very well be, where did the 9(L/9) come from?
    Spoiler:
    Show
    i used the original summation and deduced L/3 and 8L/3 to get -2L.
    The summation in part iv is clearly the original summation minus (9/3^2 + 9/6^2 + 9/9^2...)

    But the bit in brackets cancels down to the original summarion also. So the sum in part iv is L - L = 0

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    (Original post by Krollo)
    The summation in part iv is clearly the original summation minus (9/3^2 + 9/6^2 + 9/9^2...)

    But the bit in brackets cancels down to the original summarion also. So the sum in part iv is L - L = 0

    Posted from TSR Mobile
    :bricks: I did do that, but i manipulated the summation wrongly... *facepalm*

    Thank you for clarifying that Krollo!
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    4 days to A level results

    Question for Sunday 09/08/15
    AS Level Maths Upwards required


    and for those who want that little bit extra,
    A Level Maths Upwards required
    Attached Images
  9. File Type: pdf Q40, Sunday 09-08-15, solution.pdf (120.1 KB, 52 views)
  10. File Type: pdf Q40, Sunday 09-08-15, EXTRA, solution.pdf (300.4 KB, 44 views)
  11. File Type: pdf Q40, Sunday 09-08-15.pdf (10.4 KB, 51 views)
  12. File Type: pdf Q40, Sunday 09-08-15, EXTRA.pdf (15.3 KB, 46 views)
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    4 days to go!!? That went quickly....
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    (Original post by Gilo98)
    4 days to go!!? That went quickly....
    Technically 3 days
    Online

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    (Original post by SCAR H)
    Technically 3 days
    Lol u actually have nothing better to do.
    The day before results will say 0 days left? If so ur retarded.


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    (Original post by SCAR H)
    Technically 3 days
    Please get a life.....
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    (Original post by Gilo98)
    Please get a life.....
    A life?
 
 
 
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