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A bit out of order. I've reordered it. Also part of 12a is missing (direction field on writing paper) EDIT: 12a picture is here (thanks to Mr. S):

Itute Standard 1 solutions up now: https://www.itute.com/wp-content/uploads/2021-NSW-ESA-Mathematics-Standard-1-Solutions.pdf

Mybad. Sorry as a subscriber I kind of forgot about that. But click on A1La5's spoiler above.

A former James Ruse student has published some advice in the Daily Telegraph about the upcoming Extension 1 exam: https://www.dailytelegraph.com.au/education-new-south-wales/topperforming-student-reveals-top-tips-for-sitting-maths-extension-1-hsc-exam/news-story/1cd820de89e36fc8d033661d42e58223...

My criticism stands. But I want to downplay it. It's not a great drama. He went through quite a bit of hefty algebra and I'm glad he was the one doing it, not me. Overall I think he did a great job.

Just finished watching the video. My only criticism is at the very end he used a because symbol ∵ whereas he should have used a therefore symbol ∴

A Scots student made a video for Q16b for the Sydney Morning Herald: https://www.smh.com.au/national/nsw/how-to-solve-the-hardest-question-in-this-year-s-hsc-20211117-p599sp.html His solution is also available as a pdf file at...

Itute solutions to standard 2: https://www.itute.com/wp-content/uploads/2021-NSW-ESA-Mathematics-Standard-2-Solutions.pdf

Why is it horrible?

Matrix solutions: https://www.matrix.edu.au/2021-hsc-maths-ext-2-exam-paper-solutions/ Other sites to keep an eye on are https://www.itute.com/download-free-vce-maths-resources/free-maths-exams/ and http://advancedmathematics.com.au (Terry Lee) Historically Terry Lee used to be the first...

matrix solutions: https://www.matrix.edu.au/2021-hsc-maths-adv-exam-paper-solutions/

Another set of solutions from matrix: https://www.matrix.edu.au/2021-hsc-maths-std-2-exam-paper-solutions/

I used the wolframalpha ipad app "show steps" feature to make this: The ipad wolframalpha app is better than the website for this feature - no need to pay (website makes you pay - forget it ! )

Alternative solution to 15d. By Fermat's Last Theorem, 2^n+3^n\neq5^n for n>2 Also, 2^2+3^2=13\neq5^2=25 Not sure if it would be accepted though. Perfectly valid proof though.

Just note that the wolframalpha solution for 16c seems incorrect. I probably should delete it. Paradoxica's looks better.

I have indeed - but it's a bit of a mess. It's a collection of bits and pieces by various people (including myself for 13a) - but it totals up to complete solutions.

I see. Well I was able to get it so I attached it below if you are having difficulty getting it from the google drive.

Updated solution to 13a:

Someone put the solutions to standard 2 on google drive https://drive.google.com/file/d/1UG4eJsQa0g-VuJCHxwYejJUCdYVwbMX3/view?usp=sharing EDIT: link updated - should work now.

Standard 1 and 2 papers are here now: https://educationstandards.nsw.edu.au/wps/portal/nesa/resource-finder/hsc-exam-papers/2021/mathematics-standard-2021-hsc-exam-pack