Q4 was something about Reversal Integration which ahmsic talked
about. Don't know whether to put the "c" or not leh.
I think that's the only minor problem I have...
They said hence, but then I separated it into 2 so one of it is
integrate x^2 or something, then the other one is integrate the
answer from part [a].. =/
Anyway for question 6, the one on the cyclist, part one they asked
for time taken for the cyclist to travel from A to B, how do you
all do it, is it sub velocity = 0 into the equation? Then reject t
= 0s, then accept t = 12s?