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Further Maths

Shout here for any help on Further Maths modules…

10 comments to Further Maths

  • Grace
    September 20th, 2009 at 6:20 pm

    Hello!
    I was just wondering whether you could help me with some of my (Mr Williams – so Series) Further maths.

    The question is:

    Evaluate:

    20
    ∑ (1/r(r+1))
    r=1

    It’s the 1/ that’s throwing me off.
    Sorry that I can’t show this in any better layout -I’ve done the best I can.

    Thanks!
    Grace.

  • Mrs Tibble
    September 20th, 2009 at 7:11 pm

    Hi Grace,
    You need to partial fraction it first, then it turns into a method of differences one.
    Have you done partial fractions? Can’t remember which core unit it’s in. If you haven’t, then leave that question out and tell Mr Williams not to be so horrid to you!!
    Fancy a cuppa?
    JT

  • Grace
    September 20th, 2009 at 7:16 pm

    He did set it as a ‘challenge’ one, and I can’t reember doing partial fractions – so I guess that’s why.

    ooh, thanks for the offer but i’m off out right this minute and so I have no time!
    Thanks for your help, See you tomorrow!

    Grace.

  • Mrs Tibble
    September 20th, 2009 at 7:17 pm

    Hi Grace,
    Just checked the spec and partial fractions is C4. Think he owes you extra biscuits ;-)

  • Natania
    September 28th, 2009 at 6:01 pm

    Hiya Mrs Tibble,

    I’m slightly confused/thrown by the surdes in question 3a) on your homework!
    Could you please help me?

    Natania

  • Mrs Tibble
    September 28th, 2009 at 7:19 pm

    Hi Natania,

    You had me confused then lol! Trying to remember where the D1 questions had surds!!!

    Match the matrix with the general rotation matrix with cos and sin in it, and work out whhich angle works. You’ll need to remember All Stations To Catford and cos45 = sin45 = 1 over root 2.

    JT

  • Kiran
    January 8th, 2011 at 10:11 pm

    Hi Ms Tibble,

    please could you help me with q7e from the June 09 s2 paper?

    Thanks!
    Kiran

  • Mrs Tibble
    January 9th, 2011 at 2:06 pm

    Hi Kiran,

    2 – sigma = 2 – 0.816 = 1.184

    1.184 < q1 so area will be more than 0.5.

    OK?

    JT

    PS Would you like me to bring my S2 folder to tomorrow’s FMaths lesson?

  • Kiran
    January 9th, 2011 at 5:50 pm

    Hi Ms T,

    got it, thanks! Please do bring your s2 folder, as I have one other question (It shouldn’t take very long, so then we can carry on with fp2!).

    One final question, could you please help me with q7a from the D1 practice paper A? I have got:
    200<x+y)<500
    0.2(x+y)<x<o.4(x+y)
    0.6(x+y)<y<0.8(x+y)
    the non- negativity constraints
    Objective Function: P=0.3x+0.4y
    Is this correct?

    Thanks,
    Kiran

  • Mrs Tibble
    January 9th, 2011 at 7:13 pm

    Kiran – have e-mailed you.
    JT

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