how do u draw the curve? like, how do you know whether it starts concave up or concave down?Originally posted by haz_it_all
ok 8c) 2001 HSC answer is as follows:
i) dy/dx is max at the narrowest point so at ~2cms
dy/dx is min at the 'fattest' point so at ~7cms (think of it like ur pouring water in a narraw tube, its gunna fill up quicker than pouring water in a wide tube rite)
iii) it takes 5secs to fill the glass....therefore t=5, y=10
and we kno that concavity changes at y=2 and y=7 cuz we jus did it in part (i) so yeh jus gotta draw the graph now and it shuld look it does in the answers
Originally posted by Wahlito
Where can i get the 2001 solutions? The link that was posted was of the 2000 HSC solutions.