Re: HSC 2013 4U Marathon
$A ring of mass 0.6kg is attached to a point P on a string AB of length 1.4m, where AP is 0.8m. The ends A and B are attached to two points 1.0 m apart in a vertical line, A being above B. The ring is made to travel in a horizontal circle with speed v m/s.$
$(i)...
Re: MX2 Integration Marathon
Did this by brute force, probably made a silly somewhere
u^2=a+\sqrt{b+\sqrt{x}}
dx=8[(u^2-a)^2-b](u^2-a)udu
8\int u^2[(u^2-a)^2-b](u^2-a)du
expand, integrate, then sub in
Re: MX2 Integration Marathon
let x = tan@
you get end up with the integral of sec^5@
I'm not sure how to integrate it without using the recurrence formula?
I'm a pretty slow/barely average writer myself, so all my essays are usually 800-900 words and I'll add 200 words on the day answering the question (while cutting out stuff as well)
Re: Anybody else forget to tick "Tick this box if you have used another writing bookl
oops I only did this once and I forgot about the other times
honestly, if you clearly label the front cover of each booklet AND fill out the blue form stating how many writing booklets you've use, I think...