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still haven't completed the course for maths and chemistry but don't think it'll take long maybe 2 weeks for maths and 2-3 for chemistry at the moment, enjoying this short break and not touching any school work :D

heard your name being announced, good job topping/coming 2nd from the sunday class! :P

you should be taking the radius to be y + delta y and y as you are considering the distance of the y-coordinate to the x-axis. if we were rotating around y = -2, then yes, you would consider y + 2 and y + 2 + delta y

good solution asianese! i should have posted sooner, but cylindrical shells works but the integration is uglier. Cylindrical shells method: \delta V \approx \pi ((y + \delta y) - y^2) \times 2x = 2\pi x(y^2 + 2y\delta y + (\delta y)^2 - y^2) = 4\pi xy \delta y , (\delta y)^2 \approx 0 =...

Since that point lies on the curve, sub it in to get one equation. Since it has a minimum turning point at x = -1, the gradient must be 0 at that point, so sub x = -1 into dy/dx to get the second equation Solve them two simultaneously to get a and b.

sounds like fun will you be marking them yourself or will you be giving out solutions after? and to answer the threads question, ~85

unless you know you make silly mistakes. if you feel you find the last question will be a bit time consuming (after looking over it), i'd look over previous questions and maximise marks you know you will get. that's my one regret over my previous maths exams :/

a past paper a day sounds good, but you should also be looking over material for your other subjects as well what subjects do you do?

notsureifsrs

So messy.. Basically let < G be θ Then < DOB = 2θ We know triangles DOC & BOC are congruent so < DOC is θ < DFC = θ as FC || GB so corresponding angles Since < DXC = < DOC, D, X, O and C are concylic points since angles in the same segment are equal then < OXC = < ODC as angles in the same...

reminds me, got to get my laptop back from the TSO lol. its been about a year also, why bother unlocking it now?

thats still pretty good man :P i've been once or twice throughout the year, not too many times. don't recall when as well lol

haha sunday is so much more quieter than saturday they were alrite, don't think i did too well. you?

saturday

lol shit do i know you ahaha burwood

harrys you?

funnily enough, i think this is the exact same question i did at tutor two weeks ago.

lol where did you get this from?

actually sorry guys, get back to you later, or maybe someone else can help out, busy atm

Yep you're right then.