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The HSC exam committee is releasing their solutions on the internet for the first time this year onto the Board of Studies website. Previously very few people have had access to these documents which were never published before. I think most people will welcome the policy change at the Board...

The 2009 Putnam Competition was held on December 5: Questions: http://www.unl.edu/amc/a-activities/a7-problems/putnam/-pdf/2009.pdf Solutions: http://www.unl.edu/amc/a-activities/a7-problems/putnam/-pdf/2009s.pdf

I updated the zip files for 3 unit to include the solutions for 2001-2009: http://www.angelfire.com/ab7/fourunit/ext1sol2001-2009.zip

itute.com have published their solutions at http://www.itute.com/wp-content/uploads/2009-nsw-bos-mathematics-extension-1-solutions.pdf

itute.com have published their solutions today: http://www.itute.com/wp-content/uploads/2009-nsw-bos-mathematics-solutions.pdf

itute.com have published the solutions today at http://www.itute.com/wp-content/uploads/2009-nsw-bos-general-mathematics-solutionsv2.pdf

I made a thread on it here

Well for a cubic, the third derivative will always be a non-zero constant, hence for cubics, the third derivative test will always work. Don't let this make you think it will always work for all functions though. The third derivative test is sufficient but not necessary.

This is not correct. Consider y=x5. Third derivative is 0 at (0,0), but this IS an inflection.

Actually, Thuc Tran was the first. His were online at 4:50pm, whereas Terry Lee's was up at 7.21pm on 27th Oct. So if it's a race to see who can publish first, Thuc Tran is the winner. Not sure if itute did a copy/paste job from Terry Lee, but if they did, they should acknowledge it. It's...

Video of <i>Structure and Randomness in the Prime Numbers</i> lecture at ANU given by Terry Tao on Sept. 22, 2009:<p> <embed type="application/x-shockwave-flash" src="http://www.abc.net.au/tv/cinerama/swf/singleclip_player_08.swf" id="playerObject" name="playerObject" bgcolor="#000000"...

OK. Here it is.

itute.com have started to publish solutions from today. The first one to go up was the Ext. 2 at http://www.itute.com/wp-content/uploads/2009-nsw-bos-mathematics-extension-2-solutionsv2.pdf They will probably also publish the Ext. 1, 2 Unit and General ones soon

If you want to contribute to MANSW's solutions book they publish each year, you can make a submission to MANSW of your solutions to entire papers or part thereof and/or go onto the Solutions Committee. Submissions Send by post to: Attn. Margaret Bigelow MANSW PO Box 339 North Ryde...

http://4unitmaths.com/exams.html http://www.angelfire.com/ab7/fourunit/index.html http://users.tpg.com.au/nanahcub/me2.html

To clarify even further, it should be said that it's Pólya's proof, not Cambridge's. And it came to him in a dream!

Past Ext. 1 HSC papers (1967 - 2008) are at http://users.tpg.com.au/nanahcub/me1.html And trials are at http://www.boredofstudies.org/view.php?course=2

What have you been doing for the last year? lol

Do 260 http://4unitmaths.com/exams.html (200) http://www.angelfire.com/ab7/fourunit (60)

Which book was it?