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    how do you tell the difference between

    y= Acosnx + Bsinnx for the complementary function from dy^2/dx^2 +n^2y

    and y= Ae^-nx +Be^nx.

    If you have
    dy^2/dx^2 +n^2y , this will give k^2= +/- ni , so because it isn't real is it y=Acosx + Bsinx

    dy^2/dx^2 -n^2y this will give k^2= n^2, so because it is real, is it y= Ae^(nx) +Be^(-nx)


    Is this correct
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    (Original post by TheLifelessRobot)
    For FM FP1, FP2, FP3, M2, S2, D1. How about you?
    Same apart from I'm doing FP4 instead of D1
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    What's the hardest FP3 paper? I think the hardest I remember doing was June 2014.
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    The exam is in 2 days but it doesn't feel real to me. Not sure if this is good or not lol
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    (Original post by Anonymoose12)
    What's the hardest FP3 paper? I think the hardest I remember doing was June 2014.
    I'd say 2015 was harder for me
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    (Original post by Anonymoose12)
    What's the hardest FP3 paper? I think the hardest I remember doing was June 2014.
    2014
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    (Original post by Roxanne18)
    Same apart from I'm doing FP4 instead of D1
    How does FP4 compare to the other FP modules?
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    (Original post by Anonymoose12)
    What's the hardest FP3 paper? I think the hardest I remember doing was June 2014.
    2014 and 2015 by far the hardest.
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    (Original post by TheLifelessRobot)
    How does FP4 compare to the other FP modules?
    One of the most difficult along with FP2 I think.
    The whole paper is about vectors, matrices, planes and things, which is good if you can get on with them, but I find it hard!
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    (Original post by Roxanne18)
    One of the most difficult along with FP2 I think.
    The whole paper is about vectors, matrices, planes and things, which is good if you can get on with them, but I find it hard!
    What do you need overall in fm?
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    (Original post by Hjyu1)
    What do you need overall in fm?
    I need a B in it for university, but my school want me to get an A atleast. How about you ?
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    (Original post by Roxanne18)
    I need a B in it for university, but my school want me to get an A atleast. How about you ?
    Need an A for uni so trying to hopefully get 80-90 in this
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    (Original post by Hjyu1)
    Need an A for uni so trying to hopefully get 80-90 in this
    Good luck! Hope it goes well for you (:
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    (Original post by Roxanne18)
    Good luck! Hope it goes well for you (:
    You too
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    Helppppppppp jan 12 paper question 8b(ii)
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    (Original post by misslili118)
    Helppppppppp jan 12 paper question 8b(ii)

    Name:  440px-Circle_slices.svg.png
Views: 167
Size:  16.9 KBYou know the radius of the circle (=4) and you know the angle AOB. The length of the arc is  r\theta . The straight line is AB which should be easy to work out the length.
    Name:  2523t.png
Views: 150
Size:  27.2 KB
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    (Original post by B_9710)
    Name:  440px-Circle_slices.svg.png
Views: 167
Size:  16.9 KBYou know the radius of the circle (=4) and you know the angle AOB. The length of the arc is  r\theta . The straight line is AB which should be easy to work out the length.
    THANKS
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    (Original post by misslili118)
    THANKS
    Don't mistake the segment for the sector.
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    What sort of knowledge from C3 and C4 do you guys reckon we might need? I know in past papers they've used partial fractions and Rcos(x-a).

    Also, does anyone have a condensed version of the 2015 paper? I want to redo it as when we did it in school way back I got an E
    I don't want to have to print off all the lined pages though since ink is so expensive.
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    Here you go.
    Attached Images
  1. File Type: pdf 5986.pdf (148.5 KB, 119 views)
 
 
 

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