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Maths PP1

  • 07-06-2007 6:50am
    #1
    Registered Users, Registered Users 2 Posts: 12,780 ✭✭✭✭


    It's going to be unveiled fairly soon!

    And i'm bricking it! I know understand why the lure of the blue paper is too much for some on the day!:D

    I'm going to have to be strong!


«13

Comments

  • Registered Users, Registered Users 2 Posts: 2,312 ✭✭✭Limerick Dude


    Im doing ordinary level and im hoping for an a1.


  • Registered Users, Registered Users 2 Posts: 2,192 ✭✭✭HungryJoey


    OL and I think I'm fecked :(

    Ugh pray for a paper I can do.. I need this :eek:

    Hj


  • Closed Accounts Posts: 1,254 ✭✭✭Citizen_Erased


    Wasn't the worst paper we could have got by any standards but i still managed to trip fairly hard on the complex numbers in question 3 , it probably gonna cost me alot of marks. How everyone else do ?


  • Registered Users, Registered Users 2 Posts: 12,780 ✭✭✭✭ninebeanrows


    Pretty meaty paper one, the sequence and series were very difficult and the de moivres was surely impossible?

    Differentiation may have saved my bacon, paper 2 will be deciding alot for me ;)


  • Registered Users, Registered Users 2 Posts: 3,691 ✭✭✭david


    SIMPLE!!! haha Nice paper, didnt even look at 4&5 though!


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  • Registered Users, Registered Users 2 Posts: 3,691 ✭✭✭david


    DeMoivre's was very reasonable i thought? Lovely simple Calculus in 6 7 and 8 !


  • Registered Users, Registered Users 2 Posts: 309 ✭✭kazaam


    ordinary paper was fairly simple... did Q1,2,3,4,5,7,8 stumbled a bit in Q2 but overall i think it went very well


  • Registered Users, Registered Users 2 Posts: 4,195 ✭✭✭Corruptedmorals


    Calculated I should get 61% in that (pass). Question 1- full marks, a good half of question 2 and 3, question 4...about a third of the marks, question 6- half and question 7- two thirds...

    The differentiation was a bit awful, couldn't fid the formulas around them, BUT for the first time, I managed to get the car- stopping calculus bit, woo...

    Not counting it, paper 2 should be slightly better..mmm..statistics/line/area...


  • Registered Users, Registered Users 2 Posts: 309 ✭✭kazaam


    i calculated and think i got 96% on paper 1... very happy with it


  • Closed Accounts Posts: 1,504 ✭✭✭Nehpets


    Unfortunately I messed up on part B and C of Q3 but other than that (and including that) the paper was simple.

    Loved the integration question with working backwards!


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  • Registered Users, Registered Users 2 Posts: 12,780 ✭✭✭✭ninebeanrows


    Simple:eek: Oh dear.

    I totally blanked on Integration it was a disaster! Then i skipped to question 5 and probably picked up like 15 marks :o

    Couldnt do Q1 Biii or C ii
    Q2 couldnt do C
    Q3 couldnt do de Moivres (B)
    Q5 couldnt do B or C
    Q6 went a bit wrong with part C but nothing major
    Q7 again part C

    Probably a D for paper UNO


  • Registered Users, Registered Users 2 Posts: 681 ✭✭✭Enemy Of Fate


    Jesus that was the easiest OL Maths paper in years!!!My god!Couldn't believe it.I probably got a good 80% on it,the only difficult question was 6, and the last bit of 8, so I skipped 8 and only did parts (A), (B) and (C)(i) in 8.I'm so happy!!Now I can afford to do **** on paper 2.....and its the easier paper anyways!!Hurrah.


  • Closed Accounts Posts: 438 ✭✭StephenC_IRL


    i reckon i failed paper 1, gonna spend the whole weekend studying for paper 2, :(

    couldnt do any whole question right, i even think i messed up on 1a


  • Closed Accounts Posts: 39 originalcupcake


    i thought it was a pretty fair paper for HL...:D my least favourite was the q3.. integration q was a gift really...i was able to check back over it all at the end so i was pleased enough..whatd ye think of q1 b? i dont think i got out the 3rd bit...:rolleyes:


  • Closed Accounts Posts: 518 ✭✭✭colm-ccfc84


    I am not sure about it, don't think I did outstanding. (HL). Question 7 was the easiest I think. Didnt like 6c and think I did something wrong in 8c. The other Cs were ok except in the second part of question three after using the forumla I didn't know how to finish.


  • Registered Users, Registered Users 2 Posts: 12,780 ✭✭✭✭ninebeanrows


    i reckon i failed paper 1, gonna spend the whole weekend studying for paper 2, :(

    couldnt do any whole question right, i even think i messed up on 1a

    I nearly got Q7 all right, messed up on a few little bits of C and unsure about the solutions to them!

    Irish listening in a bit ughhhhhhhh


  • Closed Accounts Posts: 41 pilchard


    paper1 (OL).. i thought it was excrutiatingly easy.. i worked out that i should get like 90%.

    Q1-- full marks i'd say.. found it really easy
    Q3-- I did this as an extra, cos i had an hour to spare.. should get full marks.
    Q4-- all grand except B(iii)
    Q5-- Fine except C(ii) (iii) my worst question:(
    Q6-- grand except C(ii).. though according to others i got it right:confused:
    Q7-- All fine, easier than i expected.:D
    Q8-- grand except C(iii)

    i attempted all.. though im really bad at paper 2 so... i hope i did do well in paper one to bring marks up for paper 2...


  • Closed Accounts Posts: 4,564 ✭✭✭Naikon


    Jesus that was the easiest OL Maths paper in years!!!My god!Couldn't believe it.I probably got a good 80% on it,the only difficult question was 6, and the last bit of 8, so I skipped 8 and only did parts (A), (B) and (C)(i) in 8.I'm so happy!!Now I can afford to do **** on paper 2.....and its the easier paper anyways!!Hurrah.

    Same here!, I probably got at least a B1 in that paper.
    It looked tricky at first, but it was ok I reckon.
    Mind you I can see how the presentation would put some people off considering the B(ii) in 3 involved simple fractions that even though easy, people would not expect.

    It "looked" a little different to previous years.
    Q6(B)was a joke IMO.
    I forgot the last bit of c(ii), but I got 50/50 in the second algerbra question.


  • Registered Users, Registered Users 2 Posts: 929 ✭✭✭sternn


    Just predicted my result for paper 1 (HL): 81%...thats an improvement of 38% from the mocks, im so happy!!!

    Q6 (c) was impossible, got the first part....but the other two parts...no idea!!

    Hopefully we will get the same type of paper for paper 2 :D


  • Closed Accounts Posts: 280 ✭✭SamHamilton


    The higher level paper was nice. Easier than last years but there were a few little complicated parts.

    Q1 - I think I got it all right. But the part (b) seemed too easy. I think they were trying to trick us!

    Q2 - Great but couldn't do C(ii) Put down something like (x-(a-3))to the power of 2! I was trying to factorize a massive equation. So funny!

    Q3 - Great! I wasn't sure if I did c(ii) right though. I used the -b+- formula to get the roots. Was that right?

    Q6 - Couldn't do part (c) at all! Did part (i) of (c) but didn't do (ii) or (iii). Was really annoyed with this question.

    Q7 - Great! Wasn't sure about c(ii) though. Wrote that because (1/3, -1) is a max point the curve doesn't go higher than it and thus doesn't touch x-axis. Is that right?

    Q8 - Fine except (c) was hard. Got 22/3 and 20/3. I did it twice!

    I reckon I got a B. I was a bit disappointed cause I feel I could hav gotten an A but hey!


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  • Registered Users, Registered Users 2 Posts: 616 ✭✭✭NoelJ


    Yeah HL was okay except for 6c that just didnt make an sense to me.. Did anyone get that out


  • Closed Accounts Posts: 630 ✭✭✭Lucas10101


    Sam Hamilton....yeh...I wrote that as well as a plain stab in the dark.

    I used the b+- formula and couldnt finish?
    Complex Numbers was complicated this year with no easy simple solutions.

    Reckon I got 65%+ at the moment from the ones I got right which is up from 42% in my mock, so I'm happy at that.


  • Closed Accounts Posts: 348 ✭✭analyse this


    i got the first part out...but was completely lost in the second. i did reasonably well. nowhere near full marks though...except in integration i aced that:D


  • Registered Users, Registered Users 2 Posts: 238 ✭✭cookiemonst3r


    I thought the paper was really different this year. Dunno how else to put it! Wat was with that f(x) g(x) thing?? i didnt even know how to start it. Question 5(c) was also kinda hard. and question4


  • Registered Users, Registered Users 2 Posts: 5,501 ✭✭✭Fuzzy_Dunlop


    the key to the f(x)+g(x) think i think was that a constant differentiates to 0 so therefore f'(x)+g'(x) would equal 0. Unfortunately i differentiated them wrong in part (i) so that screwed me over


  • Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    I was happy enough with it.
    Q1 - All very easy
    Q2 - Very last part of c was slightly tricky, but I think I got it
    Q3 - Again it was nice, but the last part of c was tough, tried the -b formula and got a mess of algebra..
    Q5 - Very nice
    Q6 - Was pretty standard, c(i) was very easy, for c(ii) I let the two differentials equal eachother and got 0, which means when the functions are added they equal a constant. Took a guess that that was a rule and it turns out I was right. For c(iii) i just couldnt get it!
    Q7 - No problem.. b(ii) couldnt have been easier!
    Q8 - Again it was nice, loved the working backwards one and having to work out c. Possibly confusing rote learners!!!!!!! For the area, I think I got it right, not too sure. Certainly had my method right. Everyone I spoke to had a different answer. I think I'll try it again now.

    Lets hope paper 2 is just as nice!!


  • Registered Users, Registered Users 2 Posts: 238 ✭✭cookiemonst3r


    aw no never even thought of that!! And is the answer in part (ii) the same as part (iii)??


  • Closed Accounts Posts: 829 ✭✭✭justbringit89


    Anychance of anyone posting a full soloution ??:p:p:p


  • Registered Users, Registered Users 2 Posts: 21,656 ✭✭✭✭Mushy


    Maths went ok for me. Was able to get in bits and pieces all over the shop. I'd say I got up around 65% on it, which is quite good. Need to keep the head now for papaer 2, and if all goes well, I may be sneaking in an honour. Lets hope now


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  • Registered Users, Registered Users 2 Posts: 3,691 ✭✭✭david


    Theres a rule in the log books tan inverse x/a in case nobody spotted it


  • Registered Users, Registered Users 2 Posts: 2,192 ✭✭✭HungryJoey


    Considering I posted here earlier this morning saying I was going to fail big time, even I found it quite easy. I was delighted, Q's I have never seen before or the arrangement I never seen, I manipulated them and came out happy :) I answered q's that people I know who are very good at maths didn't. I'd say I got a good 65-70% considering I was panicking this morning thinking I was going to fail - It's quite good :)

    Paper two I should be able to match that or if not get better. Better get my head down. I've done no work over the last 2 years foolishly :mad:

    Hj


  • Registered Users, Registered Users 2 Posts: 1,488 ✭✭✭mathew


    Theres a rule in the log books tan inverse x/a in case nobody spotted it

    That worked for the f(x) part, but the g(x) was 2/x, so it doesnt work. I said g(x) was equal to cot-1(x/2) since 1/tan=cot. That worked fine. The other option was to use a substitution and chain rule it. Let u = 2/x


  • Registered Users, Registered Users 2 Posts: 238 ✭✭cookiemonst3r


    mathew wrote:
    That worked for the f(x) part, but the g(x) was 2/x, so it doesnt work. I said g(x) was equal to cot-1(x/2) since 1/tan=cot. That worked fine. The other option was to use a substitution and chain rule it. Let u = 2/x

    i got something like -2/ square root (4+xsquared) for g'(x) :confused::confused:


  • Registered Users, Registered Users 2 Posts: 137 ✭✭fuinneamh


    playa3 wrote:
    the key to the f(x)+g(x) think i think was that a constant differentiates to 0 so therefore f'(x)+g'(x) would equal 0. Unfortunately i differentiated them wrong in part (i) so that screwed me over

    But how would you then go about part (iii), also any one have a full solution for Q.2 c (ii), their beginning to bug me at this stage.


  • Closed Accounts Posts: 120 ✭✭______


    was the answer for the area on 7c 34 or 18?


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  • Registered Users, Registered Users 2 Posts: 2,312 ✭✭✭Limerick Dude


    Ordinary Level

    Question 1 : perfect

    Question 2 : Grand, cept for C, made an attempt but i know its wrong.

    Question 3 : perfect

    Question 4 : perfect

    Question 6 : couldnt get the part (ii) of C

    Questiobn 7 : Such an easy question and i got the last part of C wrong! im so pissed off :mad:

    Question 8 : Couldnt get the last part of C


    I really want an a1 so i think i need to do a near perfect paper 2, *Sigh*


  • Registered Users, Registered Users 2 Posts: 238 ✭✭cookiemonst3r


    ______ wrote:
    was the answer for the area on 7c 34 or 18?

    I didnt get any answer for 7(c) because they were just show questions


  • Closed Accounts Posts: 348 ✭✭analyse this


    ______ wrote:
    was the answer for the area on 7c 34 or 18?

    What was 7c again??:o


  • Closed Accounts Posts: 482 ✭✭Steve01


    OL Paper 1 went very well for me! Aced questions 1, 2, 3, 4, 7 and 8 which means I'm in with a shot for the A1. I had some trouble with the Gps in Q5 and parts of Q6 (not the graph part obviously...). Roll on Paper 2!


  • Closed Accounts Posts: 131 ✭✭Tomlowe


    Q7 - Great! Wasn't sure about c(ii) though. Wrote that because (1/3, -1) is a max point the curve doesn't go higher than it and thus doesn't touch x-axis. Is that right?

    you have to show that the second derivative is always negative after the max point, ie always decreasing


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  • Registered Users, Registered Users 2 Posts: 7,046 ✭✭✭eZe^


    did every question on the higher level paper.. Was a pretty straightforward test. Messed up 6 C and I forgot to relate the root(15 + 8i) from the C (1) in C part (2)... The bastards didnt say hence... haha! :D Pretty stoked though, hopefully got around 94% in that.


  • Closed Accounts Posts: 120 ✭✭______


    What was 7c again??:o


    i mean 8c, last question


  • Registered Users, Registered Users 2 Posts: 9,244 ✭✭✭sdanseo


    OL paper was fantastic, though im no good at maths generally. I thought they were just handing out marks in Q1, but that's normal. 2-4 were manageble, after that it was dodgy (me not the paper). Did 6+8 too.


  • Registered Users, Registered Users 2 Posts: 2,149 ✭✭✭ZorbaTehZ


    Q1
    (a) Piss
    (b)(i) Let b^2-4ac = 0, no bother
    (ii) Used factor rule here, think I made a mistake though, since one root was a constant
    (iii) As per last, messed up here too methinks
    (c)(i) No bother, needed to insert p^2 to get second part
    (ii) Easy if you grouped P^2 outside, otherwise messy

    Q2
    (a) Textbook
    (b) Again textbook
    (c)(i) No hassle
    (ii) No hassle if you realised its almost exactly the same as previous and you were able to keep the question tidy/bearable.

    Q3
    (a)No hassle
    (b)(i) Long, but textbook.
    (ii) Nice because you could check the answers
    (c)(i) No hassle
    (ii) No hassle, using the result from (i)

    Q4
    (a) Textbook
    (b)(i) Piss
    (ii) Not bad at all, afaik I got 5/n
    (iii) This bastard took me about 10 minutes to get it. I got confused between the n>=1 in the question, and the Un+1 in the question. So messy, but I think the examiner had got to accept it.
    (c)(i)Not bad,
    (ii) Not bad, got 17 afaik

    Q5
    Didn't do it, the binmial looked rather messy.

    Q6
    (a) No bother
    (b) (i) Textbook
    (ii) Textbook
    (c)(i) Textbook to be honest, g(x) is simply a chain rule, or you could have used a trig rule.
    (ii)I summed the differentials and got zero yadda-yadda
    (iii) The way I did this is I said since it sums to a constant for all x, then any value of x summed is that constant (fx + gx), couldn't finish it though ran out of time.

    Q7
    (a) Textbook
    (b)(i) Implicit differ. textbook
    (ii) Piss tbh.
    (c) What the hell is with this question? Almost seemed too easy.

    Q8
    All textbook.
    IVP problem in (b)(ii) applied maths peeps were away with it.


    All in all quite an easy paper. Seems they may be learning their lesson after last years.
    Personally, still not completely happy about it esp. parts 4(b)(iii) and Q6(ii)(iii) just ****ín didn't time it properly, and didn't have time to go over the entire thing.


  • Closed Accounts Posts: 131 ✭✭Tomlowe


    the induction was a sham. there was no need for any inductive step, it could be proven algebraically, but you have to do it by induction cos it says to...sham

    [(n+1)/n](Un)
    = [(n+1)/n](n/5)
    = (n+1)/5
    = Un+1


  • Closed Accounts Posts: 120 ✭✭______


    some people seem to remember the paper phenomonally well


  • Registered Users, Registered Users 2 Posts: 1,676 ✭✭✭genericgoon


    mathew wrote:
    That worked for the f(x) part, but the g(x) was 2/x, so it doesnt work. I said g(x) was equal to cot-1(x/2) since 1/tan=cot. That worked fine. The other option was to use a substitution and chain rule it. Let u = 2/x


    You could have used the triangle thing where you make g(x)=y and thus it becomes tany=2/x which when diffed gives sec^2 which is then changed to the cos equivalent and you have cos from the triangle. and stuuf. its harder to explain than do!


  • Closed Accounts Posts: 51 ✭✭ron-burgandy


    ______ wrote:
    was the answer for the area on 7c 34 or 18?

    I think you mean 8c, and I got 18 too. Well -18 but the area was below the x axis so the minus was expected.

    Nice paper I thought

    6c 4biii 2cii were tough, as in I didn't get the answers.

    3cii was very long and hard but I think I got it.

    Done 7 questions, didn't go near Q5 because of 5c

    Bring on paper two and French....


  • Registered Users, Registered Users 2 Posts: 7,046 ✭✭✭eZe^


    ZorbaTehZ wrote:
    Q1

    (ii) Used factor rule here, think I made a mistake though, since one root was a constant.


    Nah, you didnt make a mistake!


  • Closed Accounts Posts: 201 ✭✭Spank


    Thought OL was quite good, didn't get one or two little parts fully out but I attempted them as much as I could. Seriously though what did you guys write for 8 c iii) It wrecked my head, I waffled something about no real values.


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