Mathematics Extension 1 Predictions/Thoughts (1 Viewer)

[yanujw]

its ok we can all agree 2021 will forever be the easiest from the new syllabus. im not afraid to admit it

Wasn't 2020 a complete breeze? I know that it definitely was for Ext. 2.

 

[carrotsss]

on a good note, YEAH carrotss, u better be state ranking

definitely not state ranking

 

[ExtremelyBoredUser]

2020 was a complete breeze. can agree.

 

[TankKuno]

definitely not state ranking

HEY NEVER SAY NEVER STAHP

 

[Johnn0]

I practised a lot and I find that the 2022 paper was a bit easier in my opinion. I did pretty bad in this 2023 paper

 

[Luukas.2]

I've figured out a non "otherwise" method for 14(c)(i) that doesn't require any difficult algebra, if anyone is interested: https://community.boredofstudies.or...ution-speedrun-send-help.405894/#post-7515536

 

[physics9.81]

Has anyone got the solutions for the paper

 

[carrotsss]

Has anyone got the solutions for the paper

Mathematics Extension 1 Predictions/Thoughts

Incorrect anyway do doesn't matter ohh nah like i got the correct answer its just the fraction wasnt simplified to 1/3

boredofstudies.org

 

[mmmmmmmmaaaaaaa]

imo i disagree
q14 this year felt much more inaccessible than last year
might be due to exam stress but i did much worse in this exam than last years q14 where i got 9-10/15. the vector q much easier, projectile much easier to gain marks, the 4 marker differential equation was literally just free marks. so yeah. (binomial was hard tho i got 0/4 lol)

I agree with this

tf are you smoking little boy if you did 2022 you would have pissed your pants stop coping

he's right

 

[mmmmmmmmaaaaaaa]

Q14 seems time consuming but 14abc i. all seem doable 14cii seems hard to get full marks but definitely easier than the stats question from 2022

what are you on about

 

[AAArated]

what are you on about

just tryna be nice bro

 

[25jduncan]

Hey wondering for question 12e - the volume one, is it an appropriate method to find integral from 4 to 12 of f(y)^2 (Normal volume of revolution), then add the volume of a cylinder with height 10 and radius 4? Surely. ik im just overthinking but i bombed that exam

 

[Johnn0]

Hey wondering for question 12e - the volume one, is it an appropriate method to find integral from 4 to 12 of f(y)^2 (Normal volume of revolution), then add the volume of a cylinder with height 10 and radius 4? Surely. ik im just overthinking but i bombed that exam

Sounds right to me

 

[Luukas.2]

Hey wondering for question 12e - the volume one, is it an appropriate method to find integral from 4 to 12 of f(y)^2 (Normal volume of revolution), then add the volume of a cylinder with height 10 and radius 4? Surely. ik im just overthinking but i bombed that exam

Yes, and it should give you the answer cubic units.

 

[notme123]

for 16 c i), the non-otherwise approach is to create a vector perpendicular to B called C = (b2, -b1).
area OAB = 1/2 * |OA||OB|sin(<AOB) = 1/2 * |OA||OB|cos(90 - <AOB) = 1/2 * |OA||OC|cos(<COA) = 1/2(OA . OC) = 1/2(a1b2 - a2b1)
since |OB| = |OC|

pretty sure this is the simplest you can get.

 

[iheartcookies1012]

3u maths is not real

my past papers did not prepare me for that wtf... i was consistently 60+ for all past hsc papers and for this years test I feel like I absolutely bombed it. Usually q11,12,13 are a breeze, and I can get at least half of q14. This years i lost marks in question 12,13, and didn't get the majority of q14.

Was hoping for a 96/97, now its looking more like a 92

pls tell me im not the only one...otherwise im crying

 

[hehe43]

3u maths is not real

my past papers did not prepare me for that wtf... i was consistently 60+ for all past hsc papers and for this years test I feel like I absolutely bombed it. Usually q11,12,13 are a breeze, and I can get at least half of q14. This years i lost marks in question 12,13, and didn't get the majority of q14.

Was hoping for a 96/97, now its looking more like a 92

pls tell me im not the only one...otherwise im crying

Istg the people on this website are some of the most insufferable shitheads I've come across. "I'm gonna cry bc i might get 92 in a course I've finished".

 

[becoming_potato]

I was wondering, with the volume question, I forgot to take in account the cylinder base, but I calculated the volume correctly otherwise. Would I more likely be deducted 1 or 2 marks?

Also, as just a brain dump, I’m optimistically looking at about a 63/70, which granted, is not as high as I wanted to achieve, but considering how difficult the paper was, I feel alright in the end, and I hope scaling will push me to 96/97 if I’m lucky. 3 more exams for me!

 

[Aminza21]

Hey wondering for question 12e - the volume one, is it an appropriate method to find integral from 4 to 12 of f(y)^2 (Normal volume of revolution), then add the volume of a cylinder with height 10 and radius 4? Surely. ik im just overthinking but i bombed that exam

Radius -10 and height 4… about the y axis. Made this mistake in the exam rip

 

[notme123]

for 16 c i), the non-otherwise approach is to create a vector perpendicular to B called C = (b2, -b1).
area OAB = 1/2 * |OA||OB|sin(<AOB) = 1/2 * |OA||OB|cos(90 - <AOB) = 1/2 * |OA||OC|cos(<COA) = 1/2(OA . OC) = 1/2(a1b2 - a2b1)
since |OB| = |OC|

pretty sure this is the simplest you can get.

^^^^

i haven't seen a single set of solutions that uses the actual intended method without projections