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****Leaving Certificate: Higher Level Maths Discussion****

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Comments

  • #32
    Ciaran8
    Registered Users Posts: 7 ✭Ciaran8


    Any advice on what to practice tonight before tomorrow, getting worried ima fail and don't fancy repeating! Any help at all please


  • #33
    K6Y
    Registered Users Posts: 42 ✭K6Y


    feckin priests wrote: »
    Who's thinking induction will show its face?

    Definitely, it was on the sample and I don't think it was on last year. I can't get my head around it though!! Hopefully we can get most marks for doing step 1, 2 and 4.


  • #34
    feckin priests
    Registered Users Posts: 31 ✭feckin priests


    The basics of everything, like financial maths, logs, diff and int.. Maybe induction and root 2 formula


  • #35
    XtotheZ
    Registered Users Posts: 391 ✭✭XtotheZ


    can compound angles come up tomorrow?


  • #36
    K6Y
    Registered Users Posts: 42 ✭K6Y


    Btw, what paper 2 content can possibly come up tomorrow?


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  • #37
    peanut.lover22
    Registered Users Posts: 22 ✭peanut.lover22


    Do you think standard deviation and z-scores are gonna come up?


  • #38
    XtotheZ
    Registered Users Posts: 391 ✭✭XtotheZ


    peanut.lover22 wrote: »
    Do you think standard deviation and z-scores are gonna come up?

    mabye not tomorrow but it deffo will be up


  • #39
    Daithi MacG
    Registered Users Posts: 113 ✭✭Daithi MacG


    So hi, kind of sorry I had a look here today but too late now.
    Anyway fancy explaining how to get a) The Root of a Function and b) The Average Value of a Function? You'd be sound.


  • #40
    XtotheZ
    Registered Users Posts: 391 ✭✭XtotheZ


    Daithi MacG wrote: »
    So hi, kind of sorry I had a look here today but too late now.
    Anyway fancy explaining how to get a) The Root of a Function and b) The Average Value of a Function? You'd be sound.

    what do you mean by root of a function?

    avg value in integration is 1^(b-a) and then the integration part with B the larger of the two values. ie On the integral symbol it is the higher of the two numbers


  • #41
    LC.student2014
    Registered Users Posts: 24 ✭LC.student2014


    XtotheZ wrote: »
    what do you mean by root of a function?

    avg value in integration is 1^(b-a) and then the integration part with B the larger of the two values. ie On the integral symbol it is the higher of the two numbers

    Please explain what you mean by this !


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  • #42
    XtotheZ
    Registered Users Posts: 391 ✭✭XtotheZ


    LC.student2014 wrote: »
    Please explain what you mean by this !

    definite_14.gif


  • #43
    Saskatchewan
    Registered Users Posts: 256 ✭✭Saskatchewan


    Daithi MacG wrote: »
    So hi, kind of sorry I had a look here today but too late now.
    Anyway fancy explaining how to get a) The Root of a Function and b) The Average Value of a Function? You'd be sound.

    YouTube is the best for this kind of stuff.


  • #44
    XtotheZ
    Registered Users Posts: 391 ✭✭XtotheZ


    I literally seen it for the first time two days ago, very easy but if you didnt know it and it came up it could cost ya a mark or two. Sorry, my explanation wasnt exactly great


  • #45
    Janeh9
    Registered Users Posts: 111 ✭✭Janeh9


    Jesus I've done nothing all year I was lucky in the mocks that I even passed got a D3 in paper 1 and a D1 in paper 2 I'm only sitting the honours for the extra 25 I have no idea what to study :P


  • #46
    LC.student2014
    Registered Users Posts: 24 ✭LC.student2014


    So all you need to know really besides common sense is constructing surd 2 and 3, proving surd2 is irrational and the average value of a function, oui? :)


  • #47
    Chonaic17
    Registered Users Posts: 29 ✭Chonaic17


    Flickka wrote: »
    Does anyone know if that formula for average value of a function is in the log tables? Also in the 2011 papers, in the question on integration, is that type of question still on the course where you have to make some type of substitution and change the limits etc? I haven't been able to find any reference to it in any of the maths books...
    Thanks guys!

    Nope, integration by substitution is removed. I know because now in the applied maths course they will give you the answer to an integration by substitution in order to complete the question, whereas in previous years (pre 2012 I think) you had to work that out yourself.


  • #48
    Shane15
    Registered Users Posts: 221 ✭✭Shane15


    If you're asked to use De Moivre's Theorem to solve the equation (insert real number + imaginary number here), does n automatically = 10?


  • #49
    Chonaic17
    Registered Users Posts: 29 ✭Chonaic17


    Does anyone know what the story is with Binomial theorem, can it possibly come up, or is it only on for the 2015 syllabus onwards...


  • #50
    Daithi MacG
    Registered Users Posts: 113 ✭✭Daithi MacG


    Im about 95% sure binomial theorem is NOT on the course this year.


  • #51
    Daniel2590
    Registered Users Posts: 1,645 ✭✭✭Daniel2590


    If binomial expansion and binomial theorem are the same thing, you need to know how to do it...


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  • #52
    plmko
    Registered Users Posts: 160 ✭✭plmko


    Daithi MacG wrote: »
    Im about 95% sure binomial theorem is NOT on the course this year.

    I'm gonna look over it incase, there's not too much to it!

    And amortisation formula for whoever was asking, you need to be able to prove it :)

    Oh and we have to be able to prove sum of n to infinity and to n


  • #53
    FatRat
    Registered Users Posts: 3,194 ✭✭✭FatRat


    I'll actually be annoyed if they don't ask for a proof of some sort tomorrow. I made an effort to learn those proofs, it'd be nice to know I'd didn't waste my time!


  • #54
    FatRat
    Registered Users Posts: 3,194 ✭✭✭FatRat


    Also there are two proofs ye are leaving out:

    Tn=Sn-Sn-1
    Sn= a(1-r^t) / 1-r


  • #55
    2thousand14
    Registered Users Posts: 274 ✭✭2thousand14


    so wait, pascals triangle is not on it?


  • #56
    Daniel2590
    Registered Users Posts: 1,645 ✭✭✭Daniel2590


    2thousand14 wrote: »
    so wait, pascals triangle is not on it?

    You probably won't be asked it directly but it is on our course so you'll need to know how to do it for binomial expansion (especially if we're asked a identity using De Moivre's theorem)


  • #57
    Aspiring
    Registered Users Posts: 2,204 ✭✭✭Aspiring


    Is there anywhere I can get a definitive list of things I need to learn off for tomorrow such as proofs?

    I have some but not sure of everything we need.


  • #58
    2thousand14
    Registered Users Posts: 274 ✭✭2thousand14


    Daniel2590 wrote: »
    You probably won't be asked it directly but it is on our course so you'll need to know how to do it for binomial expansion (especially if we're asked a identity using De Moivre's theorem)

    and is the binomial theorem people have mentioned earlier. is it not on paper 2?


  • #59
    Daniel2590
    Registered Users Posts: 1,645 ✭✭✭Daniel2590


    Aspiring wrote: »
    Is there anywhere I can get a definitive list of things I need to learn off for tomorrow such as proofs?

    I have some but not sure of everything we need.

    Prove √2 is irrational
    Construct √2 and √3
    Proof by induction:
    1+2+...+n
    1²+2²+...+n²
    1³+2³+...+n³
    a+ar+ar²+...+ar^(n-1) = a(1-r^n) / 1-r
    De Moivre's theorem for n E N, n=0 & n E Z.
    Derive sum to infinity
    Amortisation formula


  • #60
    Daniel2590
    Registered Users Posts: 1,645 ✭✭✭Daniel2590


    2thousand14 wrote: »
    and is the binomial theorem people have mentioned earlier. is it not on paper 2?

    You might be thinking of Bernoulli Trials in statistics and probability?


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  • #61
    Aspiring
    Registered Users Posts: 2,204 ✭✭✭Aspiring


    Daniel2590 wrote: »
    Prove √2 is irrational
    Construct √2 and √3
    Proof by induction:
    1+2+...+n
    1²+2²+...+n²
    1³+2³+...+n³
    a+ar+ar²+...+ar^(n-1) a(1-r^n) / 1-r
    De Moivre's theorem for n E N, n=0 & n E Z.
    Derive sum to infinity
    Amortisation formula

    Hardly everything is it? Sounds a bit easy :pac:


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