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  1. W

    Complex Root of Unity questions!!

    Nah for question 7, I kinda think I should change the question to make it seem more a root of unity question. They give you (2+3i)^3 = -46 +9i & z^3 = -46 +9i ------> which both looks the same (-46+9i. Therefore:) z^3= -46 +9i (sub in (2+3i)^3 = -46+9i) z^3 = (2+3i)^3 (Both have the...
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    Complex Root of Unity questions!!

    Oh I understand. Can you solve this hard one? 4. w is a complex cube root of 1. Show w^2 is also a root. Find the value of 1+w+w^2. Hence find the value of (1+2w+3w^3)(1+2w^2+3w). 5. Show solutions of equation (z+1)^4=4(z-1)^4 are 1+-2i and 1/5(1+-2i) 6. Find the quadratic equation, with...
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    Complex Root of Unity questions!!

    Hey @integral95, how would you use S.O.R in question 3?
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    Complex Root of Unity questions!!

    Nice nice bro!
  5. W

    Complex Root of Unity questions!!

    And for 1b. Can't you just show w^2 + w + 1=0 Cant you just factorise w^3-1=0? (w-1)(w^2+w+1)=0 therefore, w^2 +w+1=0
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    Complex Root of Unity questions!!

    Oh did you sub in roots for w? W has 3 roots, which one did you use exactly?
  8. W

    Complex Root of Unity questions!!

    Hey Axio, could you explain how in 1c. How, w^12 = cis8pi = 1?
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    Complex Number question help!!

    I might be wrong, is it right @ledamn?
  10. W

    Complex Number question help!!

    Nope, it's wrong. Question 6 is an isosceles right angled triangle at q. But I don't know how to show working out though
  11. W

    Complex Number question help!!

    Yeah I think for 2B, it refers to the diagram in 2A
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    Physics Tutoring for HSC 2015 -- NEED BAND 6 STUDENTS!!! PROVEN RESULTS!!!

    Hey FzzyCyst! I was wondering if I could join your Saturday 2pm class!
  14. W

    After school routine ?

    3:30 - Comes home 3:30-4:30 - Dinner, checking emails, BOS, Facebook, television shows. 4:30 -7 - Finishing off homework, extra study, usually doing 10 reps of pushups after each question, reading etc. 5minutes break for every 30 minutes study. 7-8/8:15 - Exercising 8:30 - 9 - Dinner 9 - 11...
  15. W

    SELL| PREMIUM WORKED SOLUTIONS for Cambridge and Fitzpatrick both 3U and 4U

    Pm'd!
  16. W

    HSC 2014 MX2 Marathon ADVANCED (archive)

    Re: HSC 2014 4U Marathon - Advanced Level Anyone wanna solve?
  17. W

    Complex numbers help!!

    |z| = squareroot(1+ (squareroot(3)^2) = squareroot(1+3) = 2
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    HSC 2014 MX2 Marathon ADVANCED (archive)

    Re: HSC 2014 4U Marathon - Advanced Level http://community.boredofstudies.org/attachments/14/mathematics-extension-2/30921d1411026981-complex-numbers-help-photo-1.jpg
  20. W

    Complex numbers help!!

    Thanks a lot for your help! Yeah, I'm 50% finished with Complex Numbers. Just doing some practice questions, and this caught by eye. Thanks anyways!
  21. W

    Complex numbers help!!

    Hey guys! It would really be great if you guys helped me out with a few questions that I can't do. If you're helping me, please show working out so I know how to get there! Thanks! The questions are : 1. If z is a complex number where neither Re(z) or Im(z) is zero and it is given that...
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    Best/worst creative idea?

    Good idea^
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    Pauline Hanson and One Nation effect on Australia

    HAHAHA, not for my year 10 anything really. Just interested in your views on Pauline Hanson
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