my trials perms and combs was q11a) literally 3 marks and it was like 1 person already chosen how can the rest be chosen if there was 10 and you want like 4 more
Maths Ext 2 Predictions/Thoughts (1 Viewer)
- Thread starter Anaya R
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i never think of the triangle inequality as a geometic result or something complex, i imagine it as |a| + |b| >= |a+b| because its way easier
yeah thats what ive seen it as, just when they made it into 3d i just forgot everything about it lol
even the atar notes guy said it was weird and didnt know where they pulled it from. tbf its in the complex number section
yeah but i feel as if its something maybe was more used in the old syllabus, cause ive rarely seen questions on the triangle inequality (100% could be wrong though)
Wasn't last year's cutoff like 78 raw though for a 90 (even though the exam was quite easy)? Unless I'm wrong and heard some wrong info through the grapevine
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 ! )
yeah i can see how wolfram and others did it with that specific substitution (probably easier then how i did it) but was wondering if using a trig substitution that of 3sectheta and still getting 136/5 is still considered full marks given the weird limits of root 13 and 10
It's definitely a harder substitution to use but I mean if you managed to get it to work with no mistakes in your working, I can't see why they wouldn't give you the full marks (provided you did get the same answer).
There's always multiple ways to solve a problem my friend <3
yeah the limits were a pain but leaving them in arccos and then evaluating in the end it worked out to be a bunch of fractions and then 136/5
Quick question regarding marking but say for example you attempted a lot of the harder questions and had done some working relevant to the question, will HSC markers give out single marks for that?
I know usually there is specific criteria (and usually one mark that says "or equivalent merit") but I was thinking it could be quite beneficial to many students if they at least managed to show some understanding of a problem by having an approach even if its incomplete or needs work.
For example, Question 16a from memory required the use of triangle inequality I think or something? If we tried to use it, wrote it out and made some comment about mod x y z, would we still get like a single mark or are they looking for something very specific
Any thoughts on this much appreciated
I know usually there is specific criteria (and usually one mark that says "or equivalent merit") but I was thinking it could be quite beneficial to many students if they at least managed to show some understanding of a problem by having an approach even if its incomplete or needs work.
For example, Question 16a from memory required the use of triangle inequality I think or something? If we tried to use it, wrote it out and made some comment about mod x y z, would we still get like a single mark or are they looking for something very specific
Any thoughts on this much appreciated
Haha that's sick! Kudos for maintaining focus I can imagine that it would've felt quite scary cause no one wants to make silly mistakes
i think it depends on what the state does (this could be completely wrong) but i remember hearing that if questions are answered less then expected by the examiners they change up what they thought was the marking criteriaQuick question regarding marking but say for example you attempted a lot of the harder questions and had done some working relevant to the question, will HSC markers give out single marks for that?
I know usually there is specific criteria (and usually one mark that says "or equivalent merit") but I was thinking it could be quite beneficial to many students if they at least managed to show some understanding of a problem by having an approach even if its incomplete or needs work.
For example, Question 16a from memory required the use of triangle inequality I think or something? If we tried to use it, wrote it out and made some comment about mod x y z, would we still get like a single mark or are they looking for something very specific
Any thoughts on this much appreciated
What about e3
60 most likely
So you think 75 will go to 90 but 60 will only go up by 10
is e3 70???? well then maybe 56 will be the e3 cutoff but even so the scaling diminishes significantly at the extremes
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 with solutions up.
Recently he has been beaten by a few others.
Itute are very slow to put them up - maybe a month or so - some say they take a wiser approach than rushing to be the first.
Itute also seem to be consistently the most complete too - even putting them up for Standard 1 - which is very rare.
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 with solutions up.
Recently he has been beaten by a few others.
Itute are very slow to put them up - maybe a month or so - some say they take a wiser approach than rushing to be the first.
Itute also seem to be consistently the most complete too - even putting them up for Standard 1 - which is very rare.
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