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  1. K

    Integration Q

    Another question: Using the f(x) = f(a-x) rule regarding integration, prove that (xsin(2x))/(1+cos(2x)) from 0 to pi/2 equals (pi^2)/16 Also: <a href="http://www.codecogs.com/eqnedit.php?latex=\mathrm{If} \; \; I_{n}= \int sec^nx, \mathrm\; \mathrm{{show\: that }}\; I_{n}=...
  2. K

    HSC 2012-14 MX2 Integration Marathon (archive)

    Re: MX2 Integration Marathon Integrate: (7x-3)/(6+4x-x^2)^0.5
  3. K

    Integration Q

    How do you integrate ln(x) / x^4 from 1 to e? Thanks in advance
  4. K

    HSC 2012-14 MX2 Integration Marathon (archive)

    Re: MX2 Integration Marathon Integrate ln(x) / x^4 from 1 to e
  5. K

    Inverse function

    Don't know why but I can't seem to find the inverse function of: f(x) = (e^x) / 3+(e^x)
  6. K

    Urrgent help needed! Tariffs

    Pretty sure it's D) $2000 Prior to the tariff, foreign producers were selling a quantity of 300 at $10 a shirt = $3000 After the introduction of the tariff foreign producers were selling a quantity of 100 still making 10$ a shirt (as 5$ goes to Government) = 1000$ $3000-$1000 = $2000
  7. K

    HSC 2013 MX2 Marathon (archive)

    Re: HSC 2013 4U Marathon $P(x) is a polynomial of degree at least 2 such that P'(a) = 0. Show that when P(x) is divided by$ (x-a)^2 $the remainder is P(a)$
  8. K

    Economics HSC marathon

    A mining boom in Australia can lead to increased foreign direct investment into Australia. This investment is normally serviced in the form of profits, dividends or rent and this represents a leakage from the circular flow of income. This leakage will reduce future economic growth. Furthermore...
  9. K

    Roll Call: Class of 2013

    Advanced English MX1 MX2 Economics Legal ATAR aim: >97
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