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CSSA trial (advanced/ extension maths) (1 Viewer)

cheeseybunda1997

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Yeah i am rank 22, but guess what my mark was 86%. You would never even touch close to that mark bro. Let's just say Im on track for a 96 atar buddy so we'll see whos talking on the 21st of december, Corey Porter. Also, who has a name like corey porter what are you 11, like grow up dude
you guys are both so immature, use this forum for what its supposed to be used for. P.S can anyone do Maths tutoring for like $10 an hour
 

Coreyporter33

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Yea that mark was kind of okay but my mark was 74% and it was very good considering my schools hardness LOL. My teacher predicted me atar to be 96.5 lol better than yours be 0.5 percentiles LOL.
 

thatguy44

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Yea that mark was kind of okay but my mark was 74% and it was very good considering my schools hardness LOL. My teacher predicted me atar to be 96.5 lol better than yours be 0.5 percentiles LOL.
Well guess what guy, i only need 85 for my course but Im putting in that work to prove to myself that if i put my mind to something i can achieve anything bro. Im Carrying these boats, STAY HARD!!!.

Also that's a hell of a load of grammatical errors for someone with a 96.5 atar predicted, i smell a fibber

Corey Porter, More like Corey Fibber. LOL!

thatguy44>Coreyporter33
 

Coreyporter33

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Well guess what guy, i only need 85 for my course but Im putting in that work to prove to myself that if i put my mind to something i can achieve anything bro. Im Carrying these boats, STAY HARD!!!.

Also that's a hell of a load of grammatical errors for someone with a 96.5 atar predicted, i smell a fibber

Corey Porter, More like Corey Fibber. LOL!

thatguy44>Coreyporter33
Bro SHUSH
 

mmmmmmmmaaaaaaa

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Well guess what guy, i only need 85 for my course but Im putting in that work to prove to myself that if i put my mind to something i can achieve anything bro. Im Carrying these boats, STAY HARD!!!.

Also that's a hell of a load of grammatical errors for someone with a 96.5 atar predicted, i smell a fibber

Corey Porter, More like Corey Fibber. LOL!

thatguy44>Coreyporter33
couldn't agree more
 

synthesisFR

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Hey what do you think of my solutions to 32c and 32d? I reckon it is much easier to use properties of a quadratic than calculus in this case - as is often the case with questions like these.
if we had the paper we would know : p
 

carrotsss

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CSSA's answer to their 2023 Adv paper Q28b is wrong. They should have checked ln(16/9)-1 is negative and so the distance is ln(9/16)+1 (or written as ln(9/16) - -1 as question said to write it as ln(a/b)-c)

Checking doesn't seem to be CSSA's strong point because in the CSSA solutions for their 2023 Ext.2 paper Q16c there are actually 2 answers 219.1m/s OR 223.5m/s. They arise from the equation
View attachment 39610
In CSSA's solution the absolute value blissfully disappears and then they only get 1 answer 219.1m/s.

I was not so careless and put my solutions here for comparison and you will see how I got the 2 solutions: https://4unitmaths.com/cssa2023e2-tywebb.pdf
cssa seem to have a tendency of giving dodgy solutions, they have lots of problems in chemistry and physics as well
 

Luukas

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It is not impossible. Here are my solutions ...
May I ask why you put expenses as 200 + 20n in Q23? Doesn't that make the expenses in the first week 220? The question says that they start at 200 and then increase by 20 per week.
 

Luukas

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If you were taught properly you would not feel so bad about it.
This comment is very similar to what I hear the teacher who led the writing team has been saying to his class - and that he feels sorry for students who have teachers complaining that the exam was too difficult...
 

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