Maths Extension 1 Predictions/Thoughts (2 Viewers)

[la_sportive]

according to what source is this from? What is the cutoff?

it'll be lower, last year it was about 46/70 this year probably similar maybe 47

 

[Average Boreduser]

it'll be lower, last year it was about 46/70 this year probably similar maybe 47

it cant be bruh ruse kids predicting like 30 100s this yr.

 

[la_sportive]

it cant be bruh ruse kids predicting like 30 100s this yr.

look i did hsc in 2023 and 2024, you can trust me or not. the difficulty isn't massively different, but yes this year i personally found easier, probably because i was more prepared and it was slightly easier. however it wasn't easy straight up, some things were very conceptual. in the end we can never know for sure but 50/70 would be very high IMO, i think it'll be 47, could be 48, but would be surprised if it was any higher

 

[tywebb]

any set of points in x-y plane has an inverse because you can reflect any set of points about the line y=x. the result doesn't have to be a function.

so question 14b was wrong

 

[H.S. Carslaw]

So why is the question wrong?

 

[tywebb]

well here is the question



to which we find in nesa's marking guidelines the answer [-1,1] which is the correct answer to the wrong question.

so if we assume the answer is correct then the question is wrong

 

[H.S. Carslaw]

So are they going to remark it?

 

[tywebb]

dunno

i also dunno what they said about it at the nesa presentation on hsc marking at uts last week

hopefully they clarify this in the recordings of it, but that doesn't seem to have come out yet.

it is possible a remark may not be necessary

i think it strange though they give marks for [-1,1] which is wrong, given that the actual correct answer is

it would be interesting to know how many marks they give if a student just said

 

[tywebb]

nesa presentation on marking of 2024 hsc:

 

[liamkk112]

nesa presentation on marking of 2024 hsc:

after a while though the slides go black but they keep on talking

no way my hsc teacher is in here haha

 

[melanie_o]

nesa presentation on marking of 2024 hsc:

So I watched the video and from that they implied that the following were poorly attempted:


As they made it clear that these resulted poor results, would you expect variations of the questions would appear this year?

 

[bruhmoment.]

So I watched the video and from that they implied that the following were poorly attempted:
View attachment 47450
View attachment 47451
As they made it clear that these resulted poor results, would you expect variations of the questions would appear this year?View attachment 47450View attachment 47451

i sat the 2024 paper, and ill be honest, 13a, and 14b were in general weird questions, esp 14b. for 13a, it wasn't too bad, just dont think i got full marks, but 14b was a very weird question, esp answering it towards the end of the 2 hrs. 14c wasnt too bad, tbf i got lucky cause i had solved a similar question the day before. i would expect something similar to 13a popping up, but maybe more so along the lines of deriving and finding the logistics equations (check 2021 hsc question 14 population question). they may also have multiple parts to it (check normanhurst 2024 trial last question). 14b and c are probs never gonna be asked, esp this yr, very weird and out of the box questions ngl.

 

[tywebb]

it would be interesting to know how many marks they give if a student just said

i haven't really had a chance to look at the video till now.

but i've seen it now and there was no mention of correct answer and also no mention of the fact the question 14b was wrong.

either they don't know, which itself is a worry, or worse, they are trying to ignore this unhappy fact.

 

[tywebb]

as i said before "have an inverse" doesn't necessarily mean the inverse is a function

here is a example i made on desmos

clearly it has an inverse when k=3, even though the inverse is not a function

 

[barnyard]

as i said before "have an inverse" doesn't necessarily mean the inverse is a function

not to be rude but you're being a bit pedantic.
i have never seen a question like that where inverse function wasnt implied. whats the point of asking where it has an inverse relation? EVERY SINGLE POSSIBLE relationship between x and y has an inverse relation, so that would just be a stupid question.

 

[tywebb]

terry lee solutions: https://advancedmathematics.com.au/resources/2024 Ext1.pdf

 

[EDP445]

-

 

[nonya2000]

not to be rude but you're being a bit pedantic.
i have never seen a question like that where inverse function wasnt implied. whats the point of asking where it has an inverse relation? EVERY SINGLE POSSIBLE relationship between x and y has an inverse relation, so that would just be a stupid question.

ur literally suppose to be precise in math. this isn't shitty english bruv

 

[barnyard]

ur literally suppose to be precise in math. this isn't shitty english bruv

this isnt a question of precision, it's just common sense. there's no point asking where there is an inverse relation, you can very easily assume they mean inverse function as EVERY question ever is about inverse functions..
pointing out or tryna argue stuff like this is just trying to be a smartass

 

[coolcat6778]

Atar Notes has some revision lectures that can be helpful to go through each topic and remind yourself of what is involved and try some practice questions. Good for exposing big areas of weakness.

mcgrathematics has a playlist of ext. 1 topic vids on yt. havent used them much personally but they seem pretty good. (wont let me link for some reason)

Prof Dave explains has some good videos, though not specific to the hsc so you may have to dig around a little bit to find what you need (and make sure you aren't doing stuff outside the course)

Also khan academy has heaps of stuff.

Professer Dave might be a pedophile ngl.

Just use Mcgrathematics