Maths Ext 2 Predictions (2 Viewers)

[tywebb]

and now we await the nesa marking guidelines wherein they are likely to breach patel’s copyright again.

or if they become aware they have been called out on their original breach, they may simply say solution withheld due to copyright infringement.

 

[Trebla]

I think calling that a "breach" of copyright is a bit overblown.

For starters it's very obviously expressed in quite a different way to that textbook question.

If you call that a copyright "breach" then that's like saying every generic differentiation or integration question is also a "breach" of copyright because they are technically expressed in the same way (i.e. "differentiate/integrate XXX").

Also there is nothing inherently creative or original about the way the question was expressed in either case (i.e. it's very generic). Even if you want to entertain that notion, who's to say that the way that question was expressed in the textbook was even "original"? It could be a well known result from elsewhere that was also "re-expressed".

 

[tywebb]

maybe you have a different idea of same expression

it don’t have to be copy-paste to be breach of copyright

just changing wording or numbers to make it look different, could still be same expression.

the make it clearer, consider these 2 expressions of the idea of a bright sky above a house that looks like it is in night time





they are different.

clouds in different position, one has green windows, the other doesn’t, one has water in front, the other doesn’t

but they are the same expression because they are perceived the same way, hence are breach of copyright.

now if we go back to the maths questions, they are the same expression because they are perceived the same way, hence have the same solution.

for example if one were to present the solution to the patel question as the answer to the hsc question, it gets full marks.

some might still say, but exam says to find formula, book says to show it, hence are different.

well i found it alright.

in the book!

 

[Allan Mekisic]

and now we await the nesa marking guidelines wherein they are likely to breach patel’s copyright again.

or if they become aware they have been called out on their original breach, they may simply say solution withheld due to copyright infringement.

They did the same thing last year with Q16 a which was from Q21 page 65 and problem 1 page 66 from Jonathan Le Mastering HSC Maths.

 

[Allan Mekisic]

They did the same thing last year with Q16 a which was from Q21 page 65 and problem 1 page 66 from Jonathan Le Mastering HSC Maths.

 

[Allan Mekisic]

Also Q15 c from 2022 extension 2 maths HSC is the same question as q22 from review exercises from Cambridge.

 

[Trebla]

maybe you have a different idea of same expression

it don’t have to be copy-paste to be breach of copyright

just changing wording or numbers to make it look different, could still be same expression.

the make it clearer, consider these 2 expressions of the idea of a bright sky above a house that looks like it is in night time

View attachment 45659

View attachment 45660

they are different.

clouds in different position, one has green windows, the other doesn’t, one has water in front, the other doesn’t

but they are the same expression because they are perceived the same way, hence are breach of copyright.

now if we go back to the maths questions, they are the same expression because they are perceived the same way, hence have the same solution.

for example if one were to present the solution to the patel question as the answer to the hsc question, it gets full marks.

some might still say, but exam says to find formula, book says to show it, hence are different.

well i found it alright.

in the book!

How should the same idea/result be asked differently so that it doesn’t constitute a copyright breach according to you then?

The fundamental premise of a copyright breach is that there is some sort of inherent “originality” or “creativity” with the expression in the first place. There is none of that in the textbook question.

The way the question is written in the textbook is just like many other questions literally everywhere about resisted motion or projectile motion of two colliding objects (i.e. generic and unoriginal). A single textbook in the NSW corner of the world does not “own” a generically written question on resisted motion as far as I am concerned.

If a generic expression of a question/idea constitutes a copyright breach then it follows that literally every Maths question is basically a copyright breach. Highly doubt any judge would entertain that notion.

 

[Solarised]

Please stop derailing the thread guys

 

[anonymous1111]

They did the same thing last year with Q16 a which was from Q21 page 65 and problem 1 page 66 from Jonathan Le Mastering HSC Maths.

is this textbook any good?

 

[tywebb]

is this textbook any good?

yeah it good. i often get asked which textbook to use

i say cambridge + mastering

(tempted to say old patel excel now, but nah)

 

[Allan Mekisic]

is this textbook any good?

I think the mastering HSC mathematics extension 1 and 2 series are excellent. I used them in conjunction with Cambridge.

 

[femboys4life]

yeah lets just cancel that q, out of 96 now wooooooo

 

[tywebb]

other websites to watch out for for other solutions (and i'll go beyond ext. 2 for this) - but they are not there yet

terry lee: https://advancedmathematics.com.au/resources.htm (ext. 1 and 2)

matrix education: https://www.matrix.edu.au/hsc-solutions/ (std 2, adv, ext1, ext2)

itute: https://www.itute.com/download-free-vce-maths-resources/free-maths-exams/ (all 5 exams)

dymocks tutoring: https://www.dymockstutoring.edu.au/blog/ (std2, adv) (you may have to go to page 19 and above)

apex tutoring https://www.apextutoring.com.au/resources/downloads/ (all 5 papers)

cognito recently became the first with solutions to the chemistry and physics papers, and they missed the boat with maths as far as being first is concerned

but nevertheless apparently they are coming out with solutions to ext.1 and 2 eventually, but don't know when

they have placeholders for them here but they are not up yet

https://www.cognitotuition.com/blog...nsion-1-exam-paper-exemplar-answers-solutions

https://www.cognitotuition.com/blog...nsion-2-exam-paper-exemplar-answers-solutions

so they are 2 more to keep an eye on, hopefully they will be up soon

 

[anonymous1111]

why does everyone need to write solutions smh

 

[tywebb]

why does everyone need to write solutions smh

they don't

but people want to know how they went as soon as they finish the exam.

so some try to get solutions out within a few hours so people don't have to wait for nesa solution

it is also good, especially in extension 2 to get multiple solutions from various sources to see all the alternative methods

whist for some questions the solutions may be similar or even the same, there will be several where the solutions will be different

 

[tywebb]

13aii said or otherwise

here otherwise method using cross product


good?

 

[tywebb]

i made a slightly easier one


good?

 

[tywebb]

mg is up: https://educationstandards.nsw.edu....-ccd3eec6-76ac-464f-b0d2-ecf60de040b0-pcJJGdt

 

[tywebb]

here cognito solutions: https://www.cognitotuition.com/blog...nsion-2-exam-paper-exemplar-answers-solutions

pdf version attached. they somewhat more detailed than nesa's but don't do reasoning for mc

 

[tywebb]

now i bet you think this generalisation of triangle inequality has nothing whatsoever to do with this exam right?


however .............

15aiii said or otherwise and so here is the "or otherwise" method using generalised triangle inequality!