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  1. X

    Fermentation of glucose mass changes

    Fermentation by the yeast upon the glucose ceases at a certain concentration of ethanol. (i forgot the concentration level). Any concentration higher, they yeast could not survive as a result dies. Hence fermentation ceases and mass changes stops.
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    Projectile Motion HELP

    soooo... does anyone know how to do this?
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    Projectile Motion HELP

    Question 13) ANS: bii)16m iii)112 degrees
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    Projectile Motion HELP

    Hey guys, just wondering how do you do collision questions in projectile motion. I need help on Year 12 Cembridge Ex 3G Q 13b). Thanks
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    Mathematical induction - dropping terms

    When can you drop terms if they are getting in the way of your proof? Induction (summing, divisibility and inequalities)
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    induction qs

    if n is even prove n^2+2n is divisble by 8 thanks
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    limiting sum HELP

    For the GP (\sqrt5+\sqrt3)+(\sqrt5-\sqrt3)+... verify S_\infty =T_1+\frac{1}{3}\sqrt3
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    Please critique King Lear essay!

    In my opinion, you should not use the word thesis within the essay itself; because your essay really is the thesis arguing for or against the question. Following from the comments above, theres is alot of retelling and use your quotes sparingly. Quotes are really to reinforce your argument...
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    Titration HSC 2011 Question

    Can anyone show me how to do Question 26b) in the 2011 HSC Chemistry paper? I am very confused :S. Thanks for your help ^^ http://www.boardofstudies.nsw.edu.au/hsc_exams/hsc2011exams/pdf_doc/2011-hsc-exam-chemistry.pdf
  10. X

    trig calculus qs

    Qs: Change tan x = sin x/cos x show that if you integrate tan x from 0 to pi/4 the answer would be 1/2 ln(2)
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    Trig Question

    thanks didnt use the calculator couldnt do it :L
  12. X

    Trig Question

    How do i solve this provided within the domain of 0<=x<=2pi tan x =squareroot(2)-1 thanks =D
  13. X

    Parametric Q

    dunno if this would help? (1) x=t+(1/t) (2) y=t^2+(1/t^2) similarly to the property a^2+b^2=(a+b)^2-2ab (1) x^2=(t+(1/t))^2=t^2+(1/t^2)+2 therefore to get t^2+(1/t^2) we minus the 2 x^2-2=t^2+(1/t^2) substitute t^2+(1/t^2) in equation (2) y=x^2-2
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    Trignometry Formulae

    the attachment link is dead just saying.
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    Geometry of the Parabola help, eliminating the paramter

    (1) x=t+(1/t) (2) y=t^2+(1/t^2) similarly to the property a^2+b^2=(a+b)^2-2ab (1) x^2=(t+(1/t))^2=t^2+(1/t^2)+2 therefore to get t^2+(1/t^2) we minus the 2 x^2-2=t^2+(1/t^2) substitute t^2+(1/t^2) in equation (2) y=x^2-2
  16. X

    perms and combs

    "The letters KETTLE are arranged randomly in a row. Find the probability of the two letters E are together and two letters T are together". I keep getting 1/30. The answer says 2/15.
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    Permutations are much easier then combinations?

    Just wondering, are permutations much easier then combinations?
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    HSC Questions by topic

    can someone linkk
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    HSC Questions by topic

    Does anyone know where I can find a full list of HSC questions sorted by topics?
  20. X

    perms and combs 3u cam qs

    how to solve this? ex 10e q22 In how many ways can a boat of 8 women be arranged if three women can only row on the bow side and two others can only row on the stroke side? ans: 1728
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