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    (Original post by Gome44)
    Sorry about that, but I think the method is quite simple

    Let x=0.5tan(u)
    Let u=π/4 -z
    How'd you come up with the second sub (I tried the initial 0.5tanu)?
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    (Original post by 13 1 20 8 42)
    How'd you come up with the second sub (I tried the initial 0.5tanu)?
    I tried π/2 - z as this sometimes works (I was trying to turn the tan in cot), but the limits changed to much. Thus, I tried π/4 - z to 'preserve' the limits (tbh it was just a lucky guess )
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    (Original post by Gome44)
    Sorry about that, but I think the method is quite simple

    Let x=0.5tan(u)
    Let u=π/4 -z
    that is what I did...
    I just could not follow your work (I swear I saw integration by parts there)
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    Series Question
    Any takers?
    Attached Images
  1. File Type: pdf Q1.pdf (9.8 KB, 47 views)
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    (Original post by TeeEm)
    Series Question
    Any takers?
    Spoiler:
    Show

    Name:  1440768347064.jpg
Views: 34
Size:  24.1 KB


    Rather nice question :yep:

    Posted from TSR Mobile
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    (Original post by Krollo)
    Name:  1440768347064.jpg
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Size:  24.1 KB

    Rather nice question :yep:

    Posted from TSR Mobile
    it was a nice question ... it is no more since you posted the solution

    I made this today I was trying to make a question combining series from FP1 and FP2 together.
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    (Original post by TeeEm)
    it was a nice question ... it is no more since you posted the solution

    I made this today I was trying to make a question combining series from FP1 and FP2 together.
    Lol I'll spoiler it

    Posted from TSR Mobile
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    Integration Question
    Any takers?
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  2. File Type: pdf Q2.pdf (13.2 KB, 35 views)
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    (Original post by TeeEm)
    Integration Question
    Any takers?
    Wasn't that a STEP I question?
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    (Original post by rcmehta)
    Wasn't that a STEP I question?
    I did not know that it was.
    Please show me the paper
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    (Original post by TeeEm)
    I did not know that it was.
    Please show me the paper
    1997, Q6
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    (Original post by rcmehta)
    1997, Q6
    did not know ...

    mine came from else where
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    (Original post by TeeEm)
    did not know ...

    mine came from else where
    To be fair the STEP question is too easy really.
    Spoiler:
    Show
    I would have never thought to use algebraic division. Tried loads of subs as it was similar to the last one on here (well, the denominator). Or is there a clever sub that works?
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    (Original post by 13 1 20 8 42)
    To be fair the STEP question is too easy really.
    Spoiler:
    Show
    I would have never thought to use algebraic division. Tried loads of subs as it was similar to the last one on here. Or is there a clever sub that works?
    I did it exactly the same way
    Maybe there is some other way, but I have seen the question before and once you have seen it it is very difficult to think of anything else
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    (Original post by 13 1 20 8 42)
    To be fair the STEP question is too easy really.
    Spoiler:
    Show
    I would have never thought to use algebraic division. Tried loads of subs as it was similar to the last one on here (well, the denominator). Or is there a clever sub that works?
    try this one which I have also stolen and changed into my resources ...

    this is the original ...

    I will pull my hair if somebody says "this question is from so and so ..."
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  4. File Type: pdf IMG.pdf (67.3 KB, 47 views)
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    (Original post by TeeEm)
    try this one which I have also stolen and changed into my resources ...

    this is the original ...

    I will pull my hair if somebody says "this question is from so and so ..."
    I got -4 which seems suspect
    I don't think I am thinking concretely enough (tired, probably not in mental/maths shape in general) for something so involved but it's a very interesting question.

    edit: hang on I spotted an error
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    (Original post by 13 1 20 8 42)
    I got -4 which seems suspect
    I don't think I am thinking concretely enough (tired, probably not in mental/maths shape in general) for something so involved but it's a very interesting question.
    the answer should be 4
    do you want my adapted stolen version solution and then you can try yours
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    (Original post by TeeEm)
    the answer should be 4
    do you want my adapted stolen version solution and then you can try yours
    I made a sign error, I do get 4 now
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    (Original post by 13 1 20 8 42)
    I made a sign error, I do get 4 now
    all good
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    UPDATE ON I.Y.G.B SPECIAL PAPERS

    So far uploaded in my site

    Paper Z (final draft)
    Paper Z (solutions)

    Paper Y (final draft)
    Paper Y (solutions)

    Paper X (draft)
    Paper W (draft)

    Note that until I write the solutions mark allocation may change
 
 
 
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