Mathematics Extension 1 HSC thoughts (3 Viewers)

[tgone]

TL 14a is incorrect:


their substitution for (0,1) is done incorrectly, C should equal -2ln2.

Also, 14b has an incorrect conclusion (correct method however)
14d can remove ambiguity from choosing which solution by solving the quadratic eq (1) on the pdf w.r.t sqrt(n) rather than squaring both sides.

 

[tywebb]

Looks like Terry Lee has fixed up 14a. This is why I think it is better to have a link for his solutions rather than a copy of the file here.

Yesterday's pdf was timestamped 26 Oct 2022 at 6:19 pm

The new version (same link) is 27 Oct 2022 at 4:59 am: http://advancedmathematics.com.au/Resources/2022 Ext1.pdf


Not sure about the other bits though.

 

[tgone]

Looks like Terry Lee has fixed up 14a. This is why I think it is better to have a link for his solutions rather than a copy of the file here.

Yesterday's pdf was timestamped 26 Oct 2022 at 6:19 pm

The new version (same link) is 27 Oct 2022 at 4:59 am: http://advancedmathematics.com.au/Resources/2022 Ext1.pdf

View attachment 36822
Not sure about the other bits though.

Yep, I messaged him, looks like he fixed it.

 

[tgone]

I made the same mistake so how many marks could I potentially lose for that?

You would only lose one mark for that, you’ll get a carry through for the final answer being slightly off.

 

[absolute_intellect]

Does anyone know if nesa is lenient in the way they award marks for working? Like does it always have to be a substantial amount of relevant working, or making an attempt at a question is enough? Thanks

 

[notme123]

i had same concerns last year for 3u as well. they mark based on criteria which I'm sure you've seen in marking guidelines before. if the attempt you made had something relevant they may give a mark but depends on how many marks are allocated for the question. they might give more marks for 4 markers than a 2 marker.

 

[tywebb]

itute solutions: https://www.itute.com/wp-content/uploads/2022-NSW-ESA-Mathematics-Extension-1-Solutions.pdf

 

[tywebb]

Matrix Education solutions: https://www.matrix.edu.au/2022-hsc-maths-ext-1-exam-paper-solutions/

 

[sukan]

I know im late to the party but personally i found the exam to be pretty good besides 14 c and d