Posted by Teri on Tuesday, January 25, 2011 at 2:52pm.
I would integrate a dArea as ydx from x=1 to 4
area=INT (x^1/2 + 2) dx from x=1 to 4
area= 2/3 x^3/2 + 2x from 1 to 4
= 2/3 (8-1)+2(4-1) check that, I did it in my head.
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