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***JC 2014 Maths Paper One - Fri. June 6th 2014 - all levels***

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    #62
    ConorFTW
    Registered Users Posts: 15 ✭ConorFTW


    I seriously think I got a high A in that paper. I only got 52% in paper 1 in the pres but EVERYTHING worked out for me today. The only question I'm some bit unsure about was the question about estimating the height of the ball. Did ye say it was 5.5m or somewhere around that? I also said the graph was quadratic? Not sure if that's right but everything else went so smooth. Also, I did much better in Paper 2 in the pres, got 77%. Do you think I can rely on paper 2 being easier as well? Or will they screw us all over? Thanks


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    #63
    Beca19
    Registered Users Posts: 337 ✭✭Beca19


    Chloee98 wrote: »
    I said that it didn't work cos it was just 41 squared cos the +41 and -41 cancelled each other out..didn't really understand it tbh

    I think I said that 41 squared equalled some number and that number wasn't a prime it could be divided by itself 1 and also 41


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    #64
    Xgracie
    Registered Users Posts: 506 ✭✭✭Xgracie


    That was a piece of piss!! Kept checking to make sure I wasn't doing an ordinary paper! Left 20 minutes early!


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    #65
    Msrebeckyxo
    Registered Users Posts: 311 ✭✭Msrebeckyxo


    ConorFTW wrote: »
    I seriously think I got a high A in that paper. I only got 52% in paper 1 in the pres but EVERYTHING worked out for me today. The only question I'm some bit unsure about was the question about estimating the height of the ball. Did ye say it was 5.5m or somewhere around that? I also said the graph was quadratic? Not sure if that's right but everything else went so smooth. Also, I did much better in Paper 2 in the pres, got 77%. Do you think I can rely on paper 2 being easier as well? Or will they screw us all over? Thanks

    its the SEC so theyll probs screw us over ;) ah no, just know your stuff like theorems, constructions etc and you should be grand!


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    #66
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    @Conor
    We did 2 mock papers (2 paper ones, 2 paper twos)
    One of the paper twos was way easier than the other, so I'd imagine they'd have it fairly medium-ish.
    I'd have considered our paper one today rather difficult..but the questions I like tend to be the ones others dislike. :/


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    #67
    ECM1234
    Closed Accounts Posts: 225 ✭✭ECM1234


    yaEHya wrote: »
    I think I filled in 41 and got 1681 and the square root of that was 41 I didn't no what the question was about.

    I did the same.


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    #68
    Creamy_Pies
    Registered Users Posts: 5 ✭Creamy_Pies


    coolerboy wrote: »
    You had to say that but I just used figures and and a short explanation.

    Do you remember what the exact question was? I'm starting to think I gave the wrong answer, not sure though.


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    #69
    Manutd_4life
    Closed Accounts Posts: 2,858 ✭✭✭Manutd_4life


    Did alright on that paper. A low B i'd say for me. I prefer paper 2 much more. gonna work my ass off for that paper this weekend. really want an A grade


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    #70
    Xgracie
    Registered Users Posts: 506 ✭✭✭Xgracie


    yaEHya wrote: »
    How did you get 10? I think I got 4.5

    I worked it out by continuing a table and I'm pretty sure I got just under 4.5


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    #71
    S_Hick12
    Registered Users Posts: 148 ✭✭S_Hick12


    Chloee98 wrote: »
    I think I got something like 2.17x for the girl and 1.15x+10 for the boy..not sure though..I got that they were the same at 200

    I got this aswell.


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    #72
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    Creamy_Pies wrote: »
    Do you remember what the exact question was? I'm starting to think I gave the wrong answer, not sure though.

    In 1789 person x figured that using the formula n^2 + n - 41 would only give prime numbers.
    This formula works for numbers under 41.
    Explain why the formula wouldn't work for the number 41.

    Something like that.


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    #73
    coolerboy
    Registered Users Posts: 589 ✭✭✭coolerboy


    Liordi wrote: »
    but wasn't the answer in the question? :/
    My memory is kinda hazy atm but I thought it said "the formula works for numbers when n is less than 41. Explain why this wouldn't work when n = 41."
    I said something like 41 isn't less than 41, therefore it isn't going to work.


    For n = 41, it produces a square number, 1681, which is equal to 41×41, the smallest composite number for this formula. If 41 divides n, it divides P(n) too.


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    #74
    Manutd_4life
    Closed Accounts Posts: 2,858 ✭✭✭Manutd_4life


    Xgracie wrote: »
    I worked it out by continuing a table and I'm pretty sure I got just under 4.5

    Thats exactly how i did it. Is that how they want you to do and would you get full marks for that


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    #75
    Xgracie
    Registered Users Posts: 506 ✭✭✭Xgracie


    Manutd_4life wrote: »
    Thats exactly how i did it. Is that how they want you to do and would you get full marks for that

    Well like once you have correct answer and a correct method id assume you'd get the marks?


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    #76
    DanielChester
    Registered Users Posts: 53 ✭✭DanielChester


    ECM1234 wrote: »
    10 minutes

    That isn't a plausible answer, how can a ball remain in the air for 10minutes?...


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    #77
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    Manutd_4life wrote: »
    Thats exactly how i did it. Is that how they want you to do and would you get full marks for that

    I'd imagine you'd get full marks for it. :)
    Don't see why you wouldn't, that's how I did it as well, won't remember my answer until I see the paper. :(


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    #78
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    DanielChester wrote: »
    That isn't a plausible answer, how can a ball remain in the air for 10minutes?...

    Think he means 10 seconds.


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    #79
    yaEHya
    Registered Users Posts: 114 ✭✭yaEHya


    Ya I think I said 4.4 I got it by working out the second change and thats why I said it was quadratic aswell.


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    #80
    ECM1234
    Closed Accounts Posts: 225 ✭✭ECM1234


    Liordi wrote: »
    Think he means 10 seconds.

    Whoops, yeah that's what I mean


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    #81
    ComputerKing
    Banned (with Prison Access) Posts: 770 ✭✭✭ComputerKing


    Did anybody else have a point on there u shaped graph my the functions that wasn't on the u I think it was like (-1, 3) or something.


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    #82
    DanielChester
    Registered Users Posts: 53 ✭✭DanielChester


    Msrebeckyxo wrote: »
    its the SEC so theyll probs screw us over ;) ah no, just know your stuff like theorems, constructions etc and you should be grand!

    Wrong, you won't be grand, a majority of the paper will include statistics & graphs.


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    #83
    S_Hick12
    Registered Users Posts: 148 ✭✭S_Hick12


    I got 20% for the tax question but everyone else got 19%. Do you think 20 is within the acceptable answers. I got one of the graphs (kinda i think) but had no idea how to do the second one, does anyone know how you do it?


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    #84
    Msrebeckyxo
    Registered Users Posts: 311 ✭✭Msrebeckyxo


    Did anyone else get a vertical graph and a U shaped graph for the last question? I was losing the head with that question tbh hahah


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    #85
    DanielChester
    Registered Users Posts: 53 ✭✭DanielChester


    ECM1234 wrote: »
    Whoops, yeah that's what I mean

    I wonder how you got 10 seconds though, if I recall the ball began descending at 3 seconds. ._.


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    #86
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    S_Hick12 wrote: »
    I got 20% for the tax question but everyone else got 19%. Do you think 20 is within the acceptable answers. I got one of the graphs (kinda i think) but had no idea how to do the second one, does anyone know how you do it?

    You'll most likely get high partial.
    Which graph are you referencing?


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    #87
    Chloee98
    Registered Users Posts: 27 ✭Chloee98


    I think I did my graphs okay (one linear and one quadratic) but I drew my scale too small so the graph was tiny..will I lose marks even though my graph was correct :o


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    #88
    Msrebeckyxo
    Registered Users Posts: 311 ✭✭Msrebeckyxo


    DanielChester wrote: »
    Wrong, you won't be grand, a majority of the paper will include statistics & graphs.

    that's why i put etc, presuming they knew all of that would already be on the paper


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    #89
    Liordi
    Registered Users Posts: 2,226 ✭✭✭Liordi


    Msrebeckyxo wrote: »
    Did anyone else get a vertical graph and a U shaped graph for the last question? I was losing the head with that question tbh hahah

    One was U shaped the other was linear.


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    #90
    DanielChester
    Registered Users Posts: 53 ✭✭DanielChester


    S_Hick12 wrote: »
    I got 20% for the tax question but everyone else got 19%. Do you think 20 is within the acceptable answers. I got one of the graphs (kinda i think) but had no idea how to do the second one, does anyone know how you do it?

    You most likely mistakenly rounded something, you'll still get a majority of the marks, so it's fine.


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    #91
    Creamy_Pies
    Registered Users Posts: 5 ✭Creamy_Pies


    S_Hick12 wrote: »
    I got 20% for the tax question but everyone else got 19%. Do you think 20 is within the acceptable answers. I got one of the graphs (kinda i think) but had no idea how to do the second one, does anyone know how you do it?

    Once you have the right method, etc, you get half the marks going for the question or something like that. Which graph are you on about? g(x) or f(x)?


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