I doubt a question that requires that technique would appear in y11 because yes it's a year 12 topic. If I were you I'd make sure that there isnt any other way to solve the question and I'd go to it as a last resort otherwise it's probably not a good idea to use it unless the paper is for...
Ye use first derivative and let it equal 0 to get stationary points then get the double derivative and test those points to determine if it's concave up or down (if double derivative > 0 it's concave up and you have a minimum and if it's < 0 it's concave down and you have a maximum and if it's =...
apparently same with nbhs but i have a group of like 10 ppl who applied also so if one of them gets a call then i'll know (unless none of us get interviewed)
english was decent, couldve been better. math was also alright but i know i lost at least 1 mark cause i wrote "<=" when the question asked for ranges "in between" two points so it shouldve just been "<"
tan(A/2) isnt 4pi/3 because the range for A/2 is (0<=A/2<=pi)
As for pi/3, isnt it already included? because if you multiple over by 2 you get A = 2pi/3 which is in the answer
not great tbh lol. my creative was terrible and i had to guess like 8 questions on reading comp. Other than those two it wasn't too bad. normanhurst was a lot easier.
idk im switching to 14 units too cause u need 6 subjects that's what my parents told me (not sure if they're correct or not). I'm doing 3U math and eng, phys, chem, eco and software, but i dont think it's a bad idea esp if you need the 6 subjects