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  1. C

    Probability

    no, the answer is 0.79 (to 2dp)... but your working was correct! How did you get that? Thanks
  2. C

    textbooks Used for 4 unit

    It's good for Complex Numbers and Mechanics :P
  3. C

    Applications of Calculus to the Physics world question

    It's LateX (pronounced "Lay Tech")
  4. C

    Applications of Calculus to the Physics world question

    Yeah... But it's DISPLACEMENT.... ie, vector sum of the distance covered from t=0 and t=5 (how can motion start before t=0??)
  5. C

    help = integration problem!

    Sorry, I misread the question... Disregard my answer =)
  7. C

    help = integration problem!

    Integral is: sin-1(x/sqrt(3)) + c EDIT: Wrong answer.. whoops =P
  8. C

    Applications of Calculus to the Physics world question

    Hi, Could someone please do the question below? I think the answer is wrong in the book :( The velocity of a particle is given by V=6t-12t2 ms-1. Find its displacement and acceleration after 3 seconds if it is initially 5m to the right of the origin. Thanks
  9. C

    textbooks Used for 4 unit

    Fitzpatrick is alright for getting basics but the questions are too easy.
  10. C

    textbooks Used for 4 unit

    But it's missing some stuff for Conics (and has some stuff in it that was cut out in the 1989 syllabus amendment) and it doesn't cover graphs and harder 3U.
  11. C

    impossible polynomial

    Close - I have Wolfram Mathematica on my computer =D Nice thing to have, once you get to know how to use it. =P
  13. C

    Probability

    Could anyone else please help confirm these answers? Because I don't have the answers for this question. Thanks EDIT: I think I may know why you got your answer wrong.. did you put parenthesis outside your binomial terms? You should get 1-0.2060... Anyway, could you tell me how you got...
  14. C

    impossible polynomial

    Nope, I didn't =D I used a much easier method/way :P
  15. C

    Probability

    Could someone please do the following question? Thanks The probability of George being late to class is 0.2. He is supposed to attend 20 classes in a week. The Year Level Coordinator has said that if George is late to three or more classes in a week he will receive a detention. (i)What is...
  16. C

    impossible polynomial

    Here, I've done all the hard work.... x=\frac{5}{3}+\frac{25}{3 \left(\frac{1}{2} \left(-47+3 i \sqrt{6699}\right)\right)^{1/3}}+\frac{1}{3} \left(\frac{1}{2} \left(-47+3 i \sqrt{6699}\right)\right)^{1/3}\\x=\frac{5}{3}-\frac{1}{6} \left(1+i \sqrt{3}\right) \left(\frac{1}{2} \left(-47+3 i...
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    Three hours???

    lol, three hours for 2U... I reckon I'll finish with at least an hour to finish (depending on how difficult they decide to make the paper). And you can always choose leave at any time, if it's not the last 15 minutes of the exam :P so you can make it 1.5 hours for yourself if you want =D
  19. C

    Cornoeos

    Yeah it's alright, although it's missing a few bits in conics and has other stuff which isn't in the syllabus anymore. They used to have circles in conics but they cut it out and put extra stuff to do with the properties of a rectangular hyperbola and stuff.
  20. C

    Aas

    Hey thanks for your reply... But he's what Conquering Chem says, it doesn't mention anything about a standard solution: The experimental arrangement is shown in Figure 6.13. The sample to be analysed is fed into a flame which vaporises it and converts molecules and ions into atoms. The light...
  21. C

    How hard is 4 units maths?

    lol, isn't that a given? :P
  22. C

    How hard is 4 units maths?

    The definition of parallel lines is that they meet at infinity.
  23. C

    Aas

    Hello, Conquering Chemistry doesn't mention anything about a standard solution with AAS, but Jacaranda and Chemistry Contexts both say that a standard solution is needed... What is a standard solution for in AAS, and why is it necessary? Thanks
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