Maths Ext 2 Predictions (3 Viewers)

[zachyboi525]

Hi, I want to know if its possible for me to get 97+ scaled in 4u this year. The reason I ask this is because the tests are getting harder each year and that just makes me certain regarding my ability to perform in the exam. These are my results in past HSC papers I have done:
2020 - 96
2021 - 80
2022 - 83
2023 -83

Give up on it. Just dropped 99 on the 2021 paper

 

[user1207]

what are these type of questions called and what's the general method for them i've only done it a few time but forgot

 

[zachyboi525]

what are these type of questions called and what's the general method for them i've only done it a few time but forgot View attachment 45068

It's called integration. Just use u sub

 

[ringading]

stop im bringing 2 i lost my 3rd one

2 is better than non

 

[K2Trappy]

what are these type of questions called and what's the general method for them i've only done it a few time but forgot View attachment 45068

u = a-x sub

 

[user1207]

u = a-x sub

did that but i think i either messed up or got stuck at a step cause i didnt get the answer C like they wanted

 

[user1207]

NVM I GOT IT I JUST WROTE ONE THING WRONG deadass thought i was going insane

 

[K2Trappy]

NVM I GOT IT I JUST WROTE ONE THING WRONG deadass thought i was going insane

don't stress its one mark mc question at best

 

[K2Trappy]

actually i saw a paper that had sum similar q15 3 marks

 

[K1uggie]

Is this in the syllabus? Internal ratio- not the normal ratio

 

[zachyboi525]

Is this in the syllabus? Internal ratio- not the normal ratio View attachment 45069View attachment 45070

Yes

 

[K1uggie]

uh oh we never learnt whatever the answers do

 

[zachyboi525]

uh oh we never learnt whatever the answers do

You don't need to use that formula it just makes it quicker. You can easily derive the same expression without that formula

 

[K1uggie]

No like we never learnt what an internal or external ratio is e.g. why do they times OB by 3?

 

[user1207]

actually i saw a paper that had sum similar q15 3 marks

which paper? and was it the same, just finding what it is equal to or applying it in some way?

 

[K1uggie]

You don't need to use that formula it just makes it quicker. You can easily derive the same expression without that formula

nvm i see what you mean

 

[OD6]

Anyone know a rough battery life on the fx-8200 au casio calculators? Never changed the battery and if it goes flat im cooked

 

[ringading]

Anyone know a rough battery life on the fx-8200 au casio calculators? Never changed the battery and if it goes flat im cooked

should be long tho, how long have u had it for and how often do u use it

 

[C2H6O]

Anyone know a rough battery life on the fx-8200 au casio calculators? Never changed the battery and if it goes flat im cooked

It's lasted me almost 6 years now

 

[ringading]

It's lasted me almost 6 years now

i think he means the new one? but many old ones have lasted that too (they were my sisters)