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  1. pokka

    Rationalising the denominator

    \frac{1}{\sqrt5+\sqrt2}+\frac{3}{3\sqrt2-\sqrt5}\\\\$Let's rationalise the denominator for both...
  2. pokka

    Semester 1 USYD Chatter Thread

    Probably should have done this beginning of last week but since i would like to know more people i'm gonna ask who here does PHYS1901 and/or MATH1901 and/or MATH1902? :D
  3. pokka

    Trigonometric Identities

    oh damn not fast enough XD
  4. pokka

    Trigonometric Identities

    LHS=(\cot\mathit{t}+ \textup{cosec}\:\mathit{t})^2\\\\\indent\indent\:\:\:=\cot^2\mathit{t}+2\cot\mathit{t}\:\textup{cosec}\:\mathit{t}+ \textup{cosec}\:^2\mathit{t}\\\\\indent\indent\:\:\:=\frac{\cos^2t}{\sin^2t}+\frac{2\cos t}{\sin t\times\sin...
  5. pokka

    First year science transition

    i'm in maths :)
  6. pokka

    First year science transition

    I am :D which subject group you going to?
  7. pokka

    Semester 1 Timetables

    OMG they're out! XD*checks*
  8. pokka

    What are Visual techniques?

    visual techniques are used to convey the ideas from an image or visual thing they want you to imagine/see. I never did 'The Loaded Dog' for HSC so i can't give you an example:/
  9. pokka

    Logarithms - Need Help!!!

    \log_a2=\log_b16\\\\\indent\frac{\log_{10}2}{\log_{10}a}=\frac{\log_{10}16}{\log_{10}b}\\\\$We times $\log_{10} b$ up to LHS and times the $\log_{10}2$ down to the RHS so we can simplify the...
  10. pokka

    Complex Locus Problem

    Ok well zero can also be written as 0+0i, right? This basically means that real part is equal to zero and imaginary part is equal to zero as well.
  11. pokka

    Complex Locus Problem

    $So you are given that $\left | z \right |^2-2iz+2t(1+i)=0$ and we let $z=x+iy:\\\\x^2+y^2-2i(x+iy)+2t(1+i)=0\\\\$Collecting real and imaginary parts we get:$\\\\x^2+y^2+2y+2t+i(2t-2x)=0\\\\$So if we equate real parts to zero then we have:$\\\\x^2+y^2+2y+2t=0\\\\x^2+y^2+2y=-2t\\\\$You can see...
  12. pokka

    HSC 2012 MX1 Marathon #1 (archive)

    Re: 2012 HSC MX1 Marathon Oh woops I just realised haha my bad...fixed it anyway :D
  13. pokka

    HSC 2012 MX1 Marathon #1 (archive)

    Re: 2012 HSC MX1 Marathon $Ok so our aim here is to find the constant term of both ${\left(x+\frac{4}{x}\right)}^{2n}$ and ${\left(\frac{x}{a}+\frac{b}{x}\right)}^{2n}$ so we use $T_{r+1}$ for both. Firstly do this...
  14. pokka

    ID card

    me too :)
  15. pokka

    First Year Timetables at USYD

    HAHAHA i just happened to stumble across this thread! HIIIIIIIIIIII:D yeh basically what ben150891 said. vet science ain't gonna be easy and would require all your 5 days/week. The same goes for any science degree, I know i'm gonna be doing 5 days/wk as well for adv science so yeh. Go to link...
  16. pokka

    Locus of complek numbers

    $So you are given: $z + \frac{1}{z}=k,$ where k is real$\\\\$First, let z=x+iy so:$\\\\x+iy+\frac{1}{x+iy}= k\\\\x+iy+\frac{1}{x+iy}\times \frac{x-iy}{x-iy}= k\\\\x+iy+\frac{x-iy}{x^2+y^2}= k\\\\$Since we know k is REAL then we can group all the real parts and the imaginary parts and make the...
  17. pokka

    HELP!!!!

    No not really. Usually some of the high achievers have one exam they stuff up but as long as they do well in other exams they can get a good atar. Like Aysce said, learn from your mistakes. Always ask questions on how you can improve and keep working hard so you can do better:)
  18. pokka

    Anybody doing Science Transition Workshop?

    I tried registering online but it keeps saying incorrect SID or Last Name :/
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