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  1. S

    Maths Paper 32

    xlny=2x+1 lny=(2x+1)/x=2+(1/x) (1/y).dy=(-x^-2).dx dy/dx=-(x^-2)/(1/y)=-(y/x^-2)
  2. S

    Maths Paper 32

    yeah ur right k123 !!!! muahahahaha full mark!!!
  3. S

    Maths Paper 32

    btw, what did u guys get the tangent equation where it says "show ur equation in ax+by+c=0"
  4. S

    Maths Paper 32

    yeah i looking forward to get full mark on dis paper but i dunno whether i can get a mark from "explain why x increase as t increses??" in differentail question.
  5. S

    Maths Paper 32

    yeah i am very sure that length AB is 3 and if u get this correct u must get 9 marks!! ( include first part ) and i think the differential equation was x=tan inverse ((1/2)-(e^-2t)/2)... i cant remember but if t becomes large, then x=tan inverse(1/2)
  6. S

    Maths Paper 32

    i think tan3a is -44/117 ?? not sure though....but i think it is. and yeah when t become very large x=tan inverse(1/2)
  7. S

    Maths Paper 32

    no it's root 9 and AB is 3 i think u got A coordinates corrext but B is wrong and , yeah real part was 1/2
  8. S

    how's ur pure math 3????????????

    i didnt see which variant i took :O( but paper wid first question's answer is 0.585) how's the exam??? i found it's easiest in the history, they asked about prove it and show it ... haha easy thing can anyone know the answer from the vector question part 2?? find the length AB ??? i got ab...
  9. S

    PURE MATHS 3 URGENT !!!!!!

    plane p has equation of (r-3i).(2i-3j+6k)=0 what's dis???? i dun know how to change the form into ax+by+cz=d to help ur understand.... it's in the pure3 oct/nov 2007 question 10.(i) i dun understand even i looked up the mark scheme and text book ;(((( so PLZ HELP ME!!!!! P3 EXAM TMR !!!!!!
  10. S

    HOWS UR STATISTICS PAPER 62??????

    i think the percnetile would be between 40and 43 but not likely 40 and yeah, i used combination to anwser very last question and i got 14 !!! (1C1*7C1*1C1*2! = 14) and i think i wrote P(Q)andP(R) are exclusice but not independent since p(Q and R ) is not same as p(Q) * p(R) how about very...
  11. S

    HOWS UR STATISTICS PAPER 62??????

    hey guys, hows ur stat paper 62???? i found dat it's quite easy (especially the combination and permutation question!!! hahah thx god) but there is a question dat make no sense i think it was number 6 part 2 it's lyk, p(x<1/3mean)=0.8375 and find suitable relationship between mean and s.d...
  12. S

    STATISTICS PROBLEM!!!!

    but anyway thx guys :))
  13. S

    STATISTICS PROBLEM!!!!

    i did tons of dis kind of question.... but sometimes i got wrong.. even if i used the rule.... arghhhhhh:((
  14. S

    STATISTICS PROBLEM!!!!

    i am very struggling wid "continuity correction" in s1 lyk... sometime u add 0.5 but sometimes u subtract 0.5 from the value... it drives me carzy!!!! i dunno when to add and subtract valuess in different situation.. most mark scheme gives u both values, so i get one mark for it but they carry...
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