Re: HSC 2013 4U Marathon
Put a new 2014 thread? I dislike years getting mixed up =[
\fbox{1}\; $Solve the equation$\; z^2-8(1-i)z+63-16i=0
\fbox{2}\; $Prove the parallelogram law$\; |z_{1}-z_{2}|^2+|z_{1}+z_{2}|^2 = 2(|z_{1}|^2+|z_{2}|^2) \;$for all complex numbers$\;z_{1}, z_{2}. \;$You may...