Class of 2025 (2025 HSC CHAT) (21 Viewers)

[bigupsanky]

guys how to do binomial proofs its so weird i dont get it.

 

[Study to success]

it's 6 7 weekend

 

[bigupsanky]

it's 6 7 weekend

67 or 41

 

[cheesynooby]

guys how to do binomial proofs its so weird i dont get it.

just gotta expand yk

 

[Study to success]

Guys what should I get for lunch after my Eng exam on mon

 

[bigupsanky]

just gotta expand yk

nah like prove 2n c n = so and so

 

[Socialism]

67 or 41

 

[alphxreturns]

nah like prove 2n c n = so and so

the 'given (1+x)^2n = (1+x)^n (1+x)^n'?

look for coefficients, look for substitutions for x, look for anything thats recognisable from either lhs or rhs. like derivatives or integrals

 

[bigupsanky]

like this maybe?

 

[melanie_o]

I'M SO SCARED? LIKE ALL MY TEACHERS ARE PREDICTING 2025 WILL BE HARD THIS YEAR. LOL 🥲

Hard as in hard exams????

 

[alphxreturns]

View attachment 48921
like this maybe?

(1+X)^(2n+1) = (1+X)(1+X)^2n

expanding LHS

(2n+1)C0 × X^0 + (2n+1)C1 × X^1 + ... + (2n+1)Cn × X^n + ... + (2n+1)C(2n+1) × X^2n+1

symmetry of Pascal's triangle means nC0 = nCn
and so on, (2n+1)C0 = (2n+1)C(2n+1)

so since 2n+1 is odd, (sub n = any number if u want proof)
letting X = 1,
the expansion is 2((2n+1)C0 + ... + (2n+1)Cn)
rhs = (1+1)(1+1)^2n

so 2n+1C0 +...+ 2n+1Cn = 4^n

sorry I'm pressed on time but the main part was symmetry and X=1

 

[ros545]

Hey, is early entry for UTS closing today at 11:59pm (7th September) or tomorrow at 11:59pm (8th September)?
Thanks

 

[bigupsanky]

(1+X)^(2n+1) = (1+X)(1+X)^2n

expanding LHS

(2n+1)C0 × X^0 + (2n+1)C1 × X^1 + ... + (2n+1)Cn × X^n + ... + (2n+1)C(2n+1) × X^2n+1

symmetry of Pascal's triangle means nC0 = nCn
and so on, (2n+1)C0 = (2n+1)C(2n+1)

so since 2n+1 is odd, (sub n = any number if u want proof)
letting X = 1,
the expansion is 2((2n+1)C0 + ... + (2n+1)Cn)
rhs = (1+1)(1+1)^2n

so 2n+1C0 +...+ 2n+1Cn = 4^n

sorry I'm pressed on time but the main part was symmetry and X=1

oh ye u right ty ty

 

[hellokitty48920]

Maybe try studocu.

I didd but I cant find any

 

[bigupsanky]

I didd but I cant find any

thsc?

 

[hellokitty48920]

yup

thsc?

they havent updated for 2025 or anything after 2021 for legal tbh

 

[bigupsanky]

yup

they havent updated for 2025 or anything after 2021 for legal tbh

lol im not sure then ill try asking my legal peers

 

[mookie9882882]

guys i need good pen recs my handwriting is shit and i need a pen thats not too inky but also really good

 

[ros545]

Is early entry for UTS closing today at 11:59pm (7th September) or tomorrow at 11:59pm (8th September)?
Thanks

 

[Dresden]

yup

they havent updated for 2025 or anything after 2021 for legal tbh

I think they've just stopped updating the site tbh because I uploaded all my Prelim and now Trial papers for Legal and none got put on the site, same for EES.