anyone have the independent MX2 2011 paper, and the CSSA MX2 2011 paper (the link on the MX2 forum isn't working)?
Im gonna upload CSSA MX1 2011 solutions soon :)
Is it legal/allowed for students to bring in the key directive terms, such as analyse/assess/describe into an exam?
Or is it not allowed for HSC examinations?
From Independent Trial HSC 2006
Q4
Bob chooses six numbers from the numbers 1 to 4 inclusive. A machine then chooses six numbers at random from the numbers 1 to 40 inclusive. Find the probability that none of Bob's numbers match the numbers chosen by the machine, giving the answer to 2...
Thanks for the tip! Heres how I finally did it :)
\arg(z^2-a^2)=\arg(z+a)(z-a)=\arg(z+a)+\arg(z-a)\\arg(z-a)=\left(\frac{\pi-\theta}{2}\right)+\theta=\frac{\pi}{2}+\frac{\theta}{2}\\arg(z+a)=\frac{\theta}{2}\quad\text{as diagonals of rhombus bisect angles in corner}\\\therefore...
\arg(z^2-a^2)=\arg(z+a)(z-a)=\arg(z+a)+\arg(z-a)=\frac{\theta}{2}+\left(\frac{\pi}{3}+\theta\right)\
there is an equilateral triangle created due to the vector of z-a?
Yea, i just printscreened it, so maybe there was a typo. However, I initially mistook it for the difference of two squares and went ahead anyway but still I couldn't get anywhere.