Math Ext 1 Predictions/Thoughts (1 Viewer)

[JesusChriiii]

personally I view this year to be harder, but i guess it’s because that I suck at sketching and there were 4 graphing questions whereas last year there was only 1 so I got to q14 with much more limited time this year. Funnily enough my friends all agreed that this year is harder - guess the exam condition is also a thing hey

 

[Epicman69]

in 2021 it was just the last part of the last question

everything else was quite chill tbh

2020 it was iii and iv from 14a

Nah bruh the 2020 paper was so much more chill than this one, but I'm ngl the difficulty is not harder by much

 

[Jojofelyx]

Here's the paper everyone

 

[Siwel]

Nah bruh the 2020 paper was so much more chill than this one, but I'm ngl the difficulty is not harder by much

bar my terrible algebra mistakes i still think q14 was harder in 2021 then 2020, if i had the same time for q14 in 2020 as i did today ngl the perms and combs wouldnt be too bad

 

[Life'sHard]

A bit out of order.

I've reordered it.

ptsd too soon lol. Paper was alright. But the last questions kinda threw me off lol.

 

[Epicman69]

bar my terrible algebra mistakes i still think q14 was harder in 2021 then 2020, if i had the same time for q14 in 2020 as i did today ngl the perms and combs wouldnt be too bad

yea I can agree with that, if you made a silly mistake for that maximum capacity question, it would be a pain to rewrite everything lol. Though im ngl I was kinda disappointed that there wasn't a binomial proof question, since I actually studied specifically for that lol

 

[Siwel]

yea I can agree with that, if you made a silly mistake for that maximum capacity question, it would be a pain to rewrite everything lol. Though im ngl I was kinda disappointed that there wasn't a binomial proof question, since I actually studied specifically for that lol

just one is an understatement, multiple were made

 

[Siwel]

A bit out of order.

I've reordered it.

you got any solutions for x1 by any chance yet

 

[Siwel]

Nope. I literally got it 5 minutes after it was posted. Unless Jojofelyx also has solutions and posts them up, I'd say give it a day or so for solutions to come out.

ok no worries

 

[stupidpersonlol]

ptsd.....

 

[Paradoxica]

have you ever seen the one with a 3x3 grid where you can place either a 1 or a 0 in each square and adding the rows and columns gives a number and you have to prove that at least one of the results at least 3 times or smth i forgot the exact q. your pigeon holes are all possible outcomes i.e. 0,1,2,3 and your pigeons are the sums of the rows i think. thinking about it i think there was a restriction on the number of 1s and 0s.

this isn't right, since

1 1 1
1 1 0
1 0 0

has exactly 2 of each of the possible non-zero sums

 

[Johnny Sins]

A bit out of order.

I've reordered it.

well... 7 marks lost

 

[notme123]

yea I can agree with that, if you made a silly mistake for that maximum capacity question, it would be a pain to rewrite everything lol.

i did this and it wasted a lot of time, also max capacity wasnt exact right??

 

[icycledough]

Is anyone else worried that the raw mark to hsc mark conversion will be a lot worse this year because everyone has had more time to study?

I think while everyone may have had more time to study, there's a few other considerations to make. The quality of teaching would have definitely gone down a lot, which can directly affect the knowledge students can gain (unless they are proficient in independent learning). It also depends on the difficulty of the exam, which is very hard to extrapolate based purely on a BoS thread, as there were 8754 total enrolments in Maths Extension 1 this year. People's mental health would definitely have been affected a lot, which while some people will be able to not let that distract them during exams, some people will understandably be affected by that, thus, potentially affecting their exam performance.

 

[notme123]

i just realised the unnecessarily part of the binomial wasnt part of the q and was just flavour text, i just thought it meant opposite of what is said next. that is shit word choice especially for 4u kids who do stuff with proofs with those words. i hope i dont lose a mark for the inequality signs being switched because i ended up with n>6000 in the end which is correct

 

[notme123]

one eight seven's solutions.

So now we have the answer to 12a. Guess we'll have to wait for NESA to upload the question paper to find the rest of 12a (direction field on writing paper) - unless someone else uploads it before then - unlikely because answer booklets would have been collected.

wait why does 12 a go like that, why doesnt it do upwards. that curve was super ambiguous

also for the concrete one i put units cubes, would i still get the mark.
so far ive gotten full aside from the concrete one, the diagram and the sample distribution one where i might lose a mark for the inequality

 

[Siwel]

wait why does 12 a go like that, why doesnt it do upwards. that curve was super ambiguous

also for the concrete one i put units cubes, would i still get the mark.
so far ive gotten full aside from the concrete one and the sample distribution one where i might lose a mark for the inequality

yeah i did a similar thing and went past an x=intercept then up

 

[notme123]

yeah i did a similar thing and went past an x=intercept then up

they better be lenient with this one because i can see a bunch of different answers being possible

 

[Siwel]

they better be lenient with this one because i can see a bunch of different answers being possible

ive heard that it cut off and went both ways, anyway said i got zero to try and better estimate the mark, as soon as the paper said put name on booklet 12 i knew instantly what was happening

 

[notme123]

ive heard that it cut off and went both ways, anyway said i got zero to try and better estimate the mark, as soon as the paper said put name on booklet 12 i knew instantly what was happening

mine was above the x axis the entire time and had a min at that area where it was nearly flat. why did nesa choose to spice it up this time, and what is the chance both 3 and 4u papers had an extra booklet