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  1. A

    Maths Paper 32

    tan3a was -44/117 something like that...
  2. A

    Maths Paper 32

    differential equation q. x=taninverse(-(e^-2t)/2) <<<<<<<<<<<corrected* vectors i) a=-4 ii) length of AB = 3 people please tell me...are these answers correct? and what happens to x when t increases in differential eq. question?? does it approach infinity??
  3. A

    HELP maths P3!

    IzI<Iz-2I is perpendicular bisector of points z(0,0) and (2,0) which happens to be the vertical line through (1,0) 0<arg(z-u)<45degree is angle of 45 from point u(-2,1) all the lines will be dotted as no sign contains the sign of equality
  4. A

    Got Everything Coming For Chem Paper 34! :)

    pm me plzzzzzzzzzzzzzzz
  5. A

    S1 paper6 how was it????

    no...it wasn't mutually exclusive.. P(Q)...was probability of getting the product of 2 no.s 24 and.. P(R)...was.. one or both the numbers greater than 8 (am I correct??? =s...??) so in that case when we get 12 and 2....we get the product 24 which is satisfied by P(Q) as well as P(R) so i dont...
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    Small problem in 9709_w07_qp_3

    not really...generally we do it in degrees, if nothing specific is mentioned.. in this particular question no dimensions were taken into account...and a population cant be measured in degrees...so it had to be in radians...just read the question carefully and then decide which one to...
  7. A

    Small problem in 9709_w07_qp_3

    For part iii) here's the solution... rearrange the equation obtained in part i) ln N = 50ksin(0.02t) + ln 125 bring all the terms with "ln" on one side... ln N - ln 125 = 50ksin(0.02t) apply log rules...this will become...ln (N/125)=50ksin(0.02t) convert it into index form.... N/125 =...
  8. A

    Small problem in 9709_w07_qp_3

    http://ask.metafilter.com/85719/Why-do-we-use-radians i hope this helps in understanding why we use radians.... other than circles....we use it when we arent dealing with any dimensions...thats what i understood from this link... and in this question 7...population of insects is to be...
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