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From: Fred Nurk on 19 Jul 2010 03:20 Thanks for all the help. William Elliot wrote: > <snip> > x = y^2; x = y + 2 > y^2 = y + 2; y^2 - y - 2 = (y - 2)(y + 1) = 0 > > Area = integral(-1,2) (y^2 - y - 2) dy > <snip> Shouldn't it be integral(-1, 2) (2 + y - y ^ 2) dy ? Fred Nurk
From: William Elliot on 19 Jul 2010 03:49 On Mon, 19 Jul 2010, Fred Nurk wrote: > Thanks for all the help. > > William Elliot wrote: >> x = y^2; x = y + 2 >> y^2 = y + 2; y^2 - y - 2 = (y - 2)(y + 1) = 0 >> >> Area = integral(-1,2) (y^2 - y - 2) dy >> <snip> > > Shouldn't it be integral(-1, 2) (2 + y - y ^ 2) dy ? Yes.
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