Re: 2012 HSC MX2 Marathon
I suspect that it's sufficient to solve Z=Z^3 and discard -1 as a solution. My reasoning is that there clearly can't be an imaginary part present in Z. With this in mind, we can proceed noting that |Z| = Z, Z > 0 and |Z| = -Z, Z < 0. My method yields Z = 0 or/ 1...
Re: 2012 HSC MX2 Marathon
Possibly a simpler way to do this would be to use the sum of roots to find the final root, and the product of roots to find d.
That's a very inefficient way of doing the first part. The two quarter-circles cancel out and you're left with finding the area of a trapezium. No integration necessary.
It's really a tough one - astute investors have been holding onto it for years, waiting for a gem like last week. Given that the TOL can be scrapped at any moment, I'd say it's more of a punt than I'd normally be comfortable with. Having said that, fortune favours the brave?
JB HiFi is an awful investment at this time. I would punt on something like Lynas (which just got a temporary operating license for processing in Malaysia).