UPDATE: If you’re looking for the solutions to the 2019 exam, check here.
Can’t wait till the official answers are published? Wait no more – I’ve completed the answers to the 2016 HSC Mathematics Extension 1 (3-Unit) exam, just for you! I worked everything out by hand, just as you would have to do sitting the exam, but I’ve also verified the results for all questions involving calculations (calculus and trigonometry-type questions) on Wolfram-Alpha, just to be sure they are correct. Now, I do make mistakes every once in a while, so if you catch any in the working-out or on the proof-type/conceptual questions, please let me know! Also while some working-out is included for most questions, the complete required working-out may not be included on all questions.
My printer freaked out about some of the notation, brackets in particular for some reason, so I had to white-out some of the black splotches it caused and rewrite some of the text back in. I copied the wording and notation from the original test.
Click below to download the file. It is a scanned document, so please be patient!