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wish i slept more

i would assume physics is going to be harder this year. last year was easy and boring af.

blank back with a banger

not very, but generally u want to read it so u dont bomb out on an extract q which u dont recognise

he meant 67/70 = 95.7% lmfao

most likely 98

You compare HSC score first. Then external raw mark i believe. Lastly moderation/internals to 1 dp or sth or perhaps this one is a compare external papers (e.g. which one has better handwriting lol) e.g. 99.5 = 99.5 int/ext 99/100 > 100/99

then ur lowkey learning nothing in t1 uni tho lol.

that shit is boring as. ok tbf, epsilon delta's pretty neat. otherwise mech much more fun topic

On second thought, your way works. |z1|=|z2|=|z3|=1 and z1+z2+z3 = 1 does imply a rhombus with vectors z1,z2,z3, and (1,0). Since a rhombus has parallel sides, one of z1/z2/z3 has to be the vector (1,0). Not completely sure if you'll get the marks since it's HSC marking, but this method does...

nah you can't make that deduction that 'one of them has to be 1'.

compared to the rest of q16 parts this yr, it had a bit more algebra. q16d should have been the favourite for the hardest q this yr. required a bit of creativity, while q16b looks like it came out of terry lee lmao.

clearly by looking at which question has the most algebra bashing lmao

q9. s1 was a sphere. s2 was a plane. they intersect to form a circle. and then u do some simple trig to get the answer. but ye, definitely some imagination involved there.

that's the same as saying z1 + z2 + z3 =/ 1 since lhs has mod 3 lol. ur missing that mod includes imaginary parts i.e. |1/z1 + 1/z2 + 1/z3| =/ |1/z1| + |1/z2| + |1/z3|

q16d was a neat q. You need to recognise that it was somewhat a polynomial question. u get |z1| = |z2| = |z3| = 1. z1+z2+z3 = 1, z1z2z3 = 1. 1/(z2z3) + 1/(z1z3) + 1/(z1z2) = 1. => z2z3 + z1z3 + z1z2 = 1 (noticing mod = 1, 1/z = z_conj, and then noticing rhs is real) Notice that you get sum...

yes, unless negligible factors become non-negligible. e.g. 2022 cohort just happens to have absurdly high average ability.

ye that makes more sense lol

oh is this a bit of a 'needed to do terry lee' type paper? yikes that's pretty hard lmfao

last q of 2021 wasn't hard. it was just weirdly placed. caught like everyone off guard with the brute testing method lmao