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Maths Extension 2 Predictions/Thoughts (6 Viewers)

rockydo4u

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How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real
 

smiley_riley

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How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real
wdym? you have two roots, you need two more. You have (abcd being roots): a+b+c+d = 1 add abcd = -30, you have a and b given so you have 2 equations and 2 variables
 

synthesisFR

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How can you do product of roots when u don’t know if the rest of 2 roots are real or not???? How will u find the the i component if it ain’t real
What?
i) was just conjugate root theorem
ii) was sum and product with the two unknown roots as alpha and beta then solve
Iirc it was -3,2 as solutions
 

Hudz777

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nahhhh that was wild. what the actual was that SHM with the two particles wtf. spent like an hour on it.
 

Hudz777

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what was that projectile motion one part 4 with the weird ass graph, how the hell does 4x/9 correlate
 

constexpr

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What?
i) was just conjugate root theorem
ii) was sum and product with the two unknown roots as alpha and beta then solve
Iirc it was -3,2 as solutions
no fucking way it was, my working for that involved none of that...

i just did the conjugate factor thing

with the 2 - i roots i did

z^2 - 2Re(z) +|z|^2

which gave

(z^2 - 4z + 5)
i then did a factor by inspection and got
(z^2 - 4z + 5)(z^2 - z- 6)

somehow i completely ignored all those variable coefficients in the polynomial and pulled it off
 

carrotsss

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45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see
 

Hudz777

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45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see
what the hell man you’re insane!
 

synthesisFR

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45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see
Y bruh
Mf I didn’t have time left
 

dsakvyilsa

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45 people viewing this thread damn

that exam was alright, definitely harder than 2021 and close to 2022 though

im annoyed at myself because I made a silly mistake on that sphere question and possibly the locus question at the end as well but I feel decently alright about every other question (finished with just over 20 minutes left so didn’t have time to check tons but there was still enough time) so we’ll see
you're actually insane wtf
 

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