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Just one other thin about line integrals that we covered today. They make sense until I see what you've to put into the limits. For example

I= integral from A to B of xydx + integral from A to B of y^2dy

where A=(0,0) and B=(1,2)

The first case is where x=t and y=2t^2 and in brackets beside it has 0<=t<=2

I'vwe done the question and used he limits as 0 and 2, but only because it says beside the question. not because I know why! I mean whyy are the points given then? Do you work the limits out for t from the x=t and y=2t^2 eqts?