No more time to write notes! Personally I never write my own! It's time to start reading the notes! Hardout read notes! (For Sciences and PE in my case)
For maths, churn through past papers. As many as possible.
D^2 = (40+40t)^2 + (30 + 50t)^2 (by pythagoaras)
Make D the subject and simplify all the terms.
Use dD/dt and sub in t=1 to find the speed of dD/dT in km/h.
Also, for part b) D^2 = (40-40t)^2 + (30-50t)^2 and use the same steps to find dD/dt.
Re: Subject selection!!!!
Have to agree here, the higher level of competition forces students to work harder and strive harder to attain a higher rank in their cohort.
Yeah i realised too. Some questions were flippin crazy though. (So proud i got the SnCl4 titration question). Cool thing was the small free periodic table :D
Looks professional and clean. Suspect the prices will be quite high, but i'm sure it is of some worth. Hurstville is quite a way for me, and I'm almost finished with HSC but best of luck with the business anyways.