Maths Extension 1 Predictions/Thoughts (3 Viewers)

la_sportive

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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

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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.
14b.png
so question 14b was wrong
 

tywebb

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well here is the question

b.png

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
 

tywebb

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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
 

melanie_o

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nesa presentation on marking of 2024 hsc:
So I watched the video and from that they implied that the following were poorly attempted:
1745477496735.png
1745477519162.png
As they made it clear that these resulted poor results, would you expect variations of the questions would appear this year?1745477496735.png1745477519162.png
 

bruhmoment.

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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

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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

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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

example.png
 

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