Maths Extension 2 Thoughts and Feelings (1 Viewer)

[notme123]

mult choice also horrible.

Id say the most ridiculous mcq were 7, and 9.

7. Idk if they expect us to prove the converse or something, but I said it was true with the few examples I could find, which is not a proof.
9. This question involved a little bit of circle geo theorem which would fly over many students' heads perhaps. I haven't done vector proofs on a circle since hsc so it took me a few minutes to remember so maybe it would've been easier for youse idk.

 

[Trebla]

I find it interesting that a number of the harder or more unusual questions in Ext2 lately come from topics that existed in the old syllabus. Where were these in the 2010s? In the years before the new syllabus, the HSC exams trended towards being more boring/generic (with a few exceptions) which makes you think the writers got lazier or just ran out of ideas. However, they seem to have gotten a refresh, particularly after 2020 and put in some questions in those old syllabus topics that were a little unexpected (compared to papers in the 2010s) and arguably more challenging than some of the harder trial papers.

Will be interesting to see if this is sustained or whether it will also eventually become more generic over time.

 

[ikj]

What would a raw mark of 88-89 scale to this year for ext 2?

 

[okkk]

Id say the most ridiculous mcq were 7, and 9.

7. Idk if they expect us to prove the converse or something, but I said it was true with the few examples I could find, which is not a proof.
9. This question involved a little bit of circle geo theorem which would fly over many students' heads perhaps. I haven't done vector proofs on a circle since hsc so it took me a few minutes to remember so maybe it would've been easier for youse idk.

Question 9 didn't need circle geo right, it was just pythag with hypotenuse as radius of the sphere in the first set, the radius that we're trying to find and 1/4 the length of AB

 

[notme123]

Question 9 didn't need circle geo right, it was just pythag with hypotenuse as radius of the sphere in the first set, the radius that we're trying to find and 1/4 the length of AB

the dot product = 0 of two points forming a sphere is kinda derived from a circle geo thing, where if A and B are on the same diameter, both lines joining to any point on a circle are perpendicular. idk i feel you need to be a bit creative as someone said earlier. not hard once you got it tho

 

[Zyzz_139]

Do the HSC markers base your marks off of your

What would a raw mark of 88-89 scale to this year for ext 2?

Considering the test was pretty hard, it will most likely be scaled to a solid 90 to 95+

 

[notme123]

Do the HSC markers base your marks off of your

Considering the test was pretty hard, it will most likely be scaled to a solid 90 to 95+

no they would defs be in 97+ range. 85 went to 95 last year and people said that was 'easier'

 

[Zyzz_139]

Damn, so that would that mean 75 to 80, would be scaled to 90 to 95?

no they would defs be in 97+ range. 85 went to 95 last year and people said that was 'easier'

 

[Zyzz_139]

no they would defs be in 97+ range. 85 went to 95 last year and people said that was 'easier'

Also thanks for the correction!

 

[notme123]

Damn, so that would that mean 75 to 80, would be scaled to 90 to 95?

ye i think a 77 went to 93 if I'm not mistaken.

Mathematics Extension 2 – HSC Raw Marks Database

rawmarks.info

check this

 

[MemeCognoscente]

ye i think a 77 went to 93 if I'm not mistaken.

Mathematics Extension 2 – HSC Raw Marks Database

rawmarks.info

check this

damn a 65 went to 88 last year, does that mean E4 cutoff for this year could be around there?

 

[Vall]

damn a 65 went to 88 last year, does that mean E4 cutoff for this year could be around there?

maybe dont get your hopes up too high just yet tho. I feel like every year all the year 12s online complain about how much harder the exams were.

 

[tywebb]

https://www.smh.com.au/politics/nsw...-exam-question-explained-20221020-p5brm4.html

BOS has defeated SMH.

The errors spoken about previously here on BOS have embarrassed them enough to remove the video.

If you click on the link now you get

 

[yanujw]

BOS has defeated SMH.

The errors spoken about previously here on BOS have embarrassed them enough to remove the video.

If you click on the link now you get

View attachment 36703

Wasn't that the usual video they get some poor hs student to go through (this year it was Prairiewood HS I think). Jeez... that's embarassing for that person.

Looks like now they've now gone straight to a JR student for the (correct) answer.

The hardest 2022 Maths Extension 2 exam question explained

Watch James Ruse Agricultural High School student Prithika Dhiwaharan solve one of the hardest Mathematics Extension 2 exam questions.

www.smh.com.au

 

[tywebb]

Wasn't that the usual video they get some poor hs student to go through (this year it was Prairiewood HS I think). Jeez... that's embarassing for that person.

Looks like now they've now gone straight to a JR student for the (correct) answer.

The hardest 2022 Maths Extension 2 exam question explained

Watch James Ruse Agricultural High School student Prithika Dhiwaharan solve one of the hardest Mathematics Extension 2 exam questions.

www.smh.com.au

Well that's much better.

I've attached a screenshot again

 

[tywebb]

There is a new article on it at https://www.smh.com.au/national/nsw...-hsc-maths-questions-yet-20221021-p5brpl.html but they didn’t acknowledge their old video had to be replaced.

Seems like they are just trying to save face.

 

[idkkdi]

literally 1984. they need to be held accountable for their actions for not being able to do such a routine and easy question ugh. (sarcasm if anyone didn't pick it up)

also how do they decide whats the hardest question?

clearly by looking at which question has the most algebra bashing lmao

 

[notme123]

There is a new article on it at https://www.smh.com.au/national/nsw...-hsc-maths-questions-yet-20221021-p5brpl.html but they didn’t acknowledge their old video had to be replaced.

Seems like they are just trying to save face.

idk why smh articles make me cringe a little inside. especially when they get quotes from people but paraphrase it wrongly 'questions about projections that asked students to analyse the components of a motion of a particle could be read as “ambiguous.” ' I don't get what this is saying. There were no projections, only projectile motion. ik journalists arent mathematicians but including technical words for the sake of it doesn't do anything for the article or the readers.

 

[notme123]

clearly by looking at which question has the most algebra bashing lmao

last years algebra bashing was way worse. this year you literally just had to integrate twice and you're done. not denying the difficulty but the mathematical component wasn't very demanding

 

[Allan Mekisic]

The James Ruse answer to Q 16 b I think is incorrect. The solution did not take into account that there are two equations of motion. One for the journey upwards where a = - g - 0.1v and for the journey downwards a = g - 0.1v.