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  1. gamja

    fact or cap - entry to med school discriminates based on race

    I know that med schools have alternate rural and indigenous pathways but I've also heard from my tutors that some universities have a bias when choosing applicants for medical school - i.e. choosing fewer asians/indians (perhaps maintaining a quota of other backgrounds hispanic, anglo-australian...
  2. gamja

    complex number euler form modulus question

    prove\ that\ the\ max\ value\ of\ |e^{i\theta}-2|+|e^{i\theta}+2|\ is\ 2\sqrt{5} How would you solve this? Apparently there are methods using geometrical graphing or using trig algebra - feel free to solve outside these methods tho. Much thanks! :D
  3. gamja

    technique for opening line

    Is there a technique that means opening line for "Maman died today." (The Stranger CAMUS)? Other macro/medial/micro techniques appreciated for quote thanks1
  4. gamja

    Binomial Expansion 2013 Q14B 3UHSC

    2. Show that \left(1+x^2+2x\right)^{2n}=\sum _{k=0}^n\binom{2n}{k}x^{2n-k}\left(x+2\right)^{2n-k}.\: 3. It is known that x^{2n-k}\left(x+2\right)^{2n-k}=\binom{2n-k}{0}2^{2n-k}x^{2n-k}+\binom{2n-k}{1}2^{2n-k-1}x^{2n-k+1}+...+\binom{2n-k}{2n-k}2^{0}x^{4n-2k}. Show that \binom{4n}{2n}=\sum...
  5. gamja

    Binomial Expansion 2004 7b 3U HSC

    b) i. Show that for all positive integers n, x\left[\left(1+x\right)^{n-1}+\left(1+x\right)^{n-2}+...+\left(1+x\right)^{2}+\left(1+x\right)+1\right]=\left(1+x\right)^{n}-1. ii. Hence show that for 1≤k≤n, \binom{n-1}{k-1}+\binom{n-2}{k-1}+\binom{n-3}{k-1}+...+\binom{k-1}{k-1}=\binom{n}{k}...
  6. gamja

    Binomial Expansion 1999 7b 3u HSC

    Question and answer that I wrote = is this the correct answer/working? Thanks!
  7. gamja

    combs - ALGEBRAIC vowels arrangement 01 HSC q2c

    How many arrangements of the letters in the word ALGEBRAIC are possible if the vowels must occupy the 2nd, 3rd, 5th and 8th positions? ALGEBRAIC is a 9-letter word Vowels are AAEI, consonants are LGBRC I would solve this using cases: AA in 2rd, 3rd - e and i in 5th, 8th, alongisde 5 consonants...
  8. gamja

    Recurrence integration by parts - integrating cotx

    If\:U_1=\int cot^nxdx,\:show\:that\:U_n=\frac{-1}{n-1}cot^{n-1}x-U_{n-2} I'm going to take a while to do latex so here's a picture of my working so far instead: I don't know how to work the integral on the last step. Maybe some hints? (use spoilers) Thanks so much for the help!
  9. gamja

    Projectile Motion - smol question about velocity

    on such graph, impact velocity is 10sqrt21 from formula v^2 = xdot^2+ydot^2. I was just wondering, how do you know if we take the positive (as in this case) or the negative velocity? Thanks so much for your help! [edit:] Wait... maybe the answers supposed to be negative 10sqrt21 from...
  10. gamja

    Complex 'show' question II

    It is known that z^{3}+\frac{1}{z^{3}}=w^{3}-3w. from this and the quoted solution above (|w^{2}-3|\ge|w|^{2}-3), prove by contradiction that |z^{3}+\frac{1}{z^{3}}|\le2\ \to|z+\frac{1}{z}|\le2. Assuming that |w^{3}-3w|\le2\ \to|w|\le2 to be true, LHS: |w||w^{2}-3|\le2 =...
  11. gamja

    USYD Doctor of Clincal Surgery?

    What is this course about that's different to specialising in a clinic after MD? Do you have to take it if you want to become a surgeon? When can you even register to take this course (After Undergrad Med Science? After MD?) [general confusion]
  12. gamja

    Sitting posture + stomach creasing

    I'm a pretty skinny (decently low body fat BMI 18) guy and I'm getting stomach creases from poor posture - I sit down for most of my day and mainly do lots of work on a laptop or with physical notes. Any tips for better posture and fewer stomach creases?
  13. gamja

    Reduction Integration secx

    Evaluate \int _0^{\frac{\pi }{4}}\:sec^4x I know if I(n) = \int \:cos^n\left(x\right)dx then I(n) = \frac{1}{n}sin\left(x\right)cos^{n-1}\left(x\right)+\frac{n-1}{n}I\left(n-2\right) but how would we adapt that to sec^4x? Thanks for the help in advance!
  14. gamja

    Complex 'show' question

    Let z be a complex number. Let w=z+\frac{1}{z}. Show that \left|w^2-3\right|>\left|w\right|^2-3. LHS = \left|z^2+2+\frac{1}{z^2}-3\right| = \left|2cos\left(2\theta \right)-1\right| = 4cos^2x-2-1 = \left(2cos\theta \right)^2-3 RHS = \left|z+\frac{1}{z}\right|^2-3 = \left(2cos\theta \right)^2-3...
  15. gamja

    Qs involving a/b+b/a+1=0 COMPLEX NUMBERS

    Let a, b be complex numbers that satisfy \frac{a}{b}+\frac{b}{a}+1=0. i) Prove that \frac{a^{3n}}{b^{3n}}+\frac{b^{3n}}{a^{3n}}=2 for n≥1, by using Mathematical Induction. - I proved true for n=1 and assumed true for n=k, just need help with Proving true for n=k+1 ii) Show that...
  16. gamja

    92 3U HSC Q6c)ii): Binomial Question⌄

    1992 3U HSC Q6c)ii) Show that 1-\frac{1}{2}\binom{n}{1}+\frac{1}{3}\binom{n}{2}-...+\left(-1\right)^{n}\frac{1}{n+1}\binom{n}{n}=\frac{1}{n+1} from 1+\binom{n}{1}x+\binom{n}{2}x^{2}+...+\binom{n}{n}x^{n}=\left(1+x\right)^{n}, I integrated both sides to get...
  17. gamja

    How to use [TEX][/TEX] latex format on BoS?

    I was just wondering how I would paste the code in [e.g. \frac{1}{2}+\sin \left(\frac{\frac{\left(2n+1\right)}{2}\theta }{\:2sin\left(\frac{\theta }{2}\right)}\right) ] BoS with the latex formatting to make it come out as maths form? [I'm just very confused with usage of latex in general goog...
  18. gamja

    1990 hsc binomial expansion q

    q6c 1990 3u HSC hints to start ii)? Much thanks
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