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on the facebook 2 days before they asked ppl, are you 1st in your school for x2?

ngl for the weird circle and ln function volumes i somehow made up my own way to find the volumes rotated and got the right solution

whats continuity correction?

yeah i would say messing up algebra is underappreciated marks wise so maybe i get 5, i did have the intent to get the right answer

personally for parabolas, I find the vertex, restrict domain to either what they want or my choice (generally to the right of the parabola), then find the restricted range for the parabola given my restricted domain. Flip the domain and range so that they are for the inverse now and then solve...

i was like theta=0, makes sense, theta=pi/4 and thought ive done a great job now let me contemplate 16a) for an hour

somehow my mistake turned out into great theta values so i assumed i had done it right...

they did hold your hand until the algebra, just the amount of variables i magically made a u^2 become u^3 and i wouldnt be suprised if others did the same somewhere

yeah thats true, but out of all 3 surely b is the most like a normal question

trying to explain to someone pre-perms and combs the grief about to come and them not realising how much of a pain the topic can be when you just miss options

interesting they picked 16b, what about a and c? I wonder if just not many had a sufficient answer for c

just ignore the fact it intersects twice, just cause when you restrict the domain part of the parabola is disregarded

fun is quite subjective, personally prefer calculus but to each their own

this correct (the blue line being the inverse)?

honestly perms and combs is such a niche topic has like no relevance to the rest of the course and compared to my normal opinion maths can be worked on and refined, i think perms and combs is just a topic you either get it or you dread every second it appears

i can show what i came up with but honestly it might be wrong

thats so cruel, highly doubt many schools do perms and combs first

there are different ways to justify, i think as long as you say what one you are doing and justify it should be alright

yeah and considering for memory wasnt a logistic last year

called logistic i believe cause of the carrying capacity