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  1. s2Vicki

    So how many days do you spend in uni per week?

    3 days this semester but I'll probably have to go 4 days next semester :(
  2. s2Vicki

    business textbooks 4 sale

    What is the isbn for Accounting Information for Managers - Business Reporting for Decision Making textbook?
  3. s2Vicki

    Textbooks For Sale

    what is the isbn for the accounting - Business Reporting for Decision Making textbook?
  4. s2Vicki

    Business books for sale!

    Is the accounting textbook still available? If so, what is the isbn for the one you have?
  5. s2Vicki

    Cheap 2nd hand textbooks for business and commerce course

    Is the accounting textbook still available? If so, what is the isbn for the one you have?
  6. s2Vicki

    ISBN + Textbooks

    I want to buy second-hand textbooks but I was wondering whether it mattered if the ISBN was different from the ones on the textbooks sold at connect books. Would everything in the textbook still be the same?
  7. s2Vicki

    Mathematics Marathon HSC 09

    Find the turning points and determine their nature for y=sin(x-1) for 1<=x<=2pi+1
  8. s2Vicki

    Mathematics Marathon HSC 09

    i don't know...i got it off a sheet my teacher wrote.
  9. s2Vicki

    Mathematics Marathon HSC 09

    Question: Show that the maximum value of <a href="http://www.codecogs.com/eqnedit.php?latex=\frac{\ln x}{x}" target="_blank"><img src="http://latex.codecogs.com/gif.latex?\frac{\ln x}{x}" title="\frac{\ln x}{x}" /></a> is <a href="http://www.codecogs.com/eqnedit.php?latex=\frac{1}{e}"...
  10. s2Vicki

    Mathematics Marathon HSC 09

    <a href="http://www.codecogs.com/eqnedit.php?latex=3-2cos^{2}x-3sinx = 0" target="_blank"><img src="http://latex.codecogs.com/gif.latex?3-2cos^{2}x-3sinx = 0" title="3-2cos^{2}x-3sinx = 0" /></a>
  11. s2Vicki

    Mathematics Marathon HSC 09

    actually i wrote the question wrong it's actually 3-2(cos(x^2))x - 3sinx =0 and i got it mixed up with 2sin(^2)x + cos x -2 = 0 mind doing both of them? both are between 0 and 360 degrees
  12. s2Vicki

    Mathematics Marathon HSC 09

    whoops, yeah it was meant to be 360.
  13. s2Vicki

    Mathematics Marathon HSC 09

    Question: Solve 3-2[cos(^2)x]-2=0 for 0 degress<= x <= 260 degrees
  14. s2Vicki

    Mathematics Marathon HSC 09

    i) a=-4, d=-8 Sn = (100/2)[2(-4)+(100-1)(-8)] S100 = -40 000 ii) -40 000 -8 = -40 008 And the rest? lol i couldn't be bothered then. but i've done it now. check the post again. i edited it.
  15. s2Vicki

    Mathematics Marathon HSC 09

    lol i don't know how to do it. that's why i asked.
  16. s2Vicki

    Mathematics Marathon HSC 09

    Answer: a) a=1, d=4 Sn = (n/2)[2a+(n-1)d] = (n/2) [2(1)+(n-1)4) = (n/2) [3+4n-4) = (n/2) [4n-1] = n[8n-2] = 8(n^2)-2n b) a=3, d=4 Sn = (n/2) [2(3)+(n-1)4] = (n/2) [6+4n-4] = (n/2) [4n+2] = n(8n+4) = 8(n^2)+4n i) a=-4, d=-8 Sn =...
  17. s2Vicki

    Mathematics Marathon HSC 09

    it should...
  18. s2Vicki

    Mathematics Marathon HSC 09

    a=2, r=2 Tn = ar^(n-1) T20 = 2*(2^19) = 1 048 576
  19. s2Vicki

    Mathematics Marathon HSC 09

    Answer: table of values: x -1 0 1 2 3 4 f(x) √2 √1 √2 √5 √10 √17 √[1+(x^2)] dx = (1/3)[(√2+√17)+2(√2+√10)+4(√1+√5)] = 9.2115... Question: 2(x^2) + pq + q = 0 has one root 3 times the other. Show that 3(p^2) = 32q
  20. s2Vicki

    Mathematics Marathon HSC 09

    Question: Find the maximum product of 2 numbers whose sum is 25.
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