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Maths O Paper 1 Aftermath

1…457910

Comments

  • #182
    purple27
    Registered Users, Registered Users 2 Posts: 25 ✭purple27


    4c(ii) t=11 and k=3.5


  • #183
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    amortentia wrote: »
    Ughh I had worked out h but I got stuck trying to figure out something with indices?! Oh well, that was one of the two things I know for sure I got wrong. There are probably a good few other mistakes in my paper though.

    If you did Q8, how did you prove that the curve has no turning points please?

    I just did it one by one on the calculator when I got to the indices part. :P

    For Q8 (iv) and (v) I didn't have a clue!:confused:
    I've just checked the papers and the (v) part appears in 2007 paper too. But I don't get the answer in the marking scheme.


  • #184
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    JimmerKiller wrote: »
    You have to differentiate it again to get the acceleration, can't remember think it worked out at like -3m/s/s which proves that the ball was slowing down.

    Oh noo I was talking about Q5 c part ;)

    By the way, is it Q7 c(iii) that needs to get the acceleration??:eek:


  • #185
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    lisabisa wrote: »
    I got t=6 and k=7 if I remember correct! D:

    I think I got t=6 and k=5 :(


  • #186
    r0cks0l1dd
    Registered Users, Registered Users 2 Posts: 87 ✭✭r0cks0l1dd


    Just something about Paper 2 (because I don't want to make a whole thread about it). With area and volume, I always write down Pi as just the symbol and use the Pi button on my calculator because it doesn't specify too use 22/7 or 3.14. Will I be ok doing this?


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  • #187
    Platinum2010
    Closed Accounts Posts: 452 ✭✭Platinum2010


    That paper was horrible .Normally Arithmetic is my strong point but im slowly discovering I clearly got the wrong answers ffs :(


  • #188
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Cannon_93 wrote: »
    t=6 k=7 maybe?:)

    You probably got it right because I've seen many people giving this answers :o


  • #189
    Damo 2k9
    Registered Users, Registered Users 2 Posts: 3,513 ✭✭✭Damo 2k9


    Platinum2010 wrote: »
    That paper was horrible .Normally Arithmetic is my strong point but im slowly discovering I clearly got the wrong answers ffs :(
    Youll still get attempt marks, and even if you only got the final answer wrong you get the main amount of marks for filling out the formula :)


  • #190
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Cydoniac wrote: »
    Did anyone get x=4.5 for the question where you sub in a to find x? I was unsure about it but I subbed it back into the equation and it worked out.

    YES! Q2 a, x=4.5!!:p


  • #191
    Platinum2010
    Closed Accounts Posts: 452 ✭✭Platinum2010


    Damo 2k9 wrote: »
    Youll still get attempt marks, and even if you only got the final answer wrong you get the main amount of marks for filling out the formula :)

    I got part A right
    then for the currency I think I divided it by 12 , I know i didnt divide by 88 anyway
    then part c I ended up with something like 3hrs 47 mins I think


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  • #192
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    r0cks0l1dd wrote: »
    Just something about Paper 2 (because I don't want to make a whole thread about it). With area and volume, I always write down Pi as just the symbol and use the Pi button on my calculator because it doesn't specify too use 22/7 or 3.14. Will I be ok doing this?

    Yeahhh! I do that too!:pac:


  • #193
    r0cks0l1dd
    Registered Users, Registered Users 2 Posts: 87 ✭✭r0cks0l1dd


    megumiwinS wrote: »
    YES! Q2 a, x=4.5!!:p

    Yeah me too. I was a bit weary of it at first but it seems like it was right.

    For c(ii)- I got k=7 and t=5. Anyone else?:confused:


  • #194
    Welshman666
    Registered Users, Registered Users 2 Posts: 66 ✭✭Welshman666


    I did all of the Questions. Most were fine, but my Q6 was a bit dodgey. Q5 was my favourite, I know I got the full 50 marks anyway :)


  • #195
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Welshman666 wrote: »
    I did all of the Questions. Most were fine, but my Q6 was a bit dodgey. Q5 was my favourite, I know I got the full 50 marks anyway :)


    How was your part Cs?? Okay too??:confused:


  • #196
    lisabisa
    Closed Accounts Posts: 50 ✭✭lisabisa


    megumiwinS wrote: »
    I think I got t=6 and k=5 :(

    This is the worst part bout discussing it after, you begin to doubt yourself. I guess the only thing is to hope for the best and whatnot;)


  • #197
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    How did you guys go about doing that simultaneous? I had never done one with fractions before and I was unsure, but I think I ended up with whole numbers so it was safe.


  • #198
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Cydoniac wrote: »
    How did you guys go about doing that simultaneous? I had never done one with fractions before and I was unsure, but I think I ended up with whole numbers so it was safe.

    It was grand yeah. The fraction part you just need to cross multiply and then will be the same as usual. :o


  • #199
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    And did you multiply the second line by 10 then so they'd be common fractions?


  • #200
    lisabisa
    Closed Accounts Posts: 50 ✭✭lisabisa


    Cydoniac wrote: »
    How did you guys go about doing that simultaneous? I had never done one with fractions before and I was unsure, but I think I ended up with whole numbers so it was safe.

    X=2 and y= -3 , think I got that one right ha. Hadn't done it with fractions before either but it looked correct so;)


  • #201
    GoldFour4
    Moderators, Sports Moderators Posts: 5,189 Mod ✭✭✭✭GoldFour4


    Cydoniac wrote: »
    And did you multiply the second line by 10 then so they'd be common fractions?

    I tried doing it another way before i cross multiplied. It worked out fine.


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  • #202
    Chris Martin
    Registered Users, Registered Users 2 Posts: 1,277 ✭✭✭Chris Martin


    Loved the paper,
    Got 63% in my Pres,
    Worked out to get 97% in this test.
    Done Q's 1,2,3,4,5 & 7
    Not a smart know it all but it just fell perfectly for me,
    Need B3 for college in Maths so thats a good start :)


  • #203
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Cydoniac wrote: »
    And did you multiply the second line by 10 then so they'd be common fractions?

    Emm... I didn't multiply by 10. I just cross multiplied and got 5x=4-2y


  • #204
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    lisabisa wrote: »
    X=2 and y= -3 , think I got that one right ha. Hadn't done it with fractions before either but it looked correct so;)

    Yeah I got that too!:p


  • #205
    lisabisa
    Closed Accounts Posts: 50 ✭✭lisabisa


    megumiwinS wrote: »
    Yeah I got that too!:p

    Woo, it's nice to not be alone!:D


  • #206
    J_E
    Closed Accounts Posts: 5,734 ✭✭✭J_E


    megumiwinS wrote: »
    Emm... I didn't multiply by 10. I just cross multiplied and got 5x=4-2y
    I did that, but then it's over 10, so I thought for it to work with the other equation you had to multiply the other one by 10. I ended up with 2 and 3 as answers I think so if I did make a mistake, hopefully it will be counted as just a blunder.


  • #207
    megumiwinS
    Closed Accounts Posts: 30 ✭megumiwinS


    Cydoniac wrote: »
    I did that, but then it's over 10, so I thought for it to work with the other equation you had to multiply the other one by 10. I ended up with 2 and 3 as answers I think so if I did make a mistake, hopefully it will be counted as just a blunder.

    Hmm... It seems like you did an extra step :confused:
    But anyway you got the right answers! :D


  • #208
    Welshman666
    Registered Users, Registered Users 2 Posts: 66 ✭✭Welshman666


    megumiwinS wrote: »
    How was your part Cs?? Okay too??:confused:
    Some parts of the C's were a bit dodgey. I calculated that im guaranteed atleast a B on P1 anyway, I'm hoping for A overall (as I dropped from honours, I feel i should but I don't know) but my P2 usualy isn't as good, but i'll work on it tomorrow :P


  • #209
    Platinum2010
    Closed Accounts Posts: 452 ✭✭Platinum2010


    I would sincerely hate to be the teacher who has the pleasure of correcting my paper


  • #210
    Saphira Bunansa
    Closed Accounts Posts: 9 ✭Saphira Bunansa


    Platinum2010 wrote: »
    I got part A right
    then for the currency I think I divided it by 12 , I know i didnt divide by 88 anyway
    then part c I ended up with something like 3hrs 47 mins I think

    I got 3 hrs 46 I think ;) So hopefully we're on the right track!


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  • #211
    LittleMissLost
    Registered Users, Registered Users 2 Posts: 479 ✭✭LittleMissLost


    Platinum2010 wrote: »
    I would sincerely hate to be the teacher who has the pleasure of correcting my paper

    Same.. It wasn't particurlarly bad but I attempted a few parts a good 3/4 times :/

    I'm sure you did well though! Chin up!


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