umm... formulas do give meaning concept. If one can actually understand the formula they will learn the concept. It can work the other way too. For example that formula tells u that the intensity of EM radiation given off by a black body cavity is a function of the frequency of the wave and...
integration of ln x is
xlnx - x :) it works but we didnt have to do it and i dont know integration of (ln x) square
umm for question 10b last one i got 2 answers x=1 and x=r and i thought x=r was the correct one when i subbed it, maybe i chose wrong one cause i was presed for time.
yeah i got that one i ended up with x=r for the answer and when i subbed it in it seemed to be correct.
In reply to the fish question i also got v = 3u/2 for the answer :)
For the bricks i think it may have been 73 rows (not 100% but fairly sure)
i think i stuffed up the last bit on...