Posted by Tim on Thursday, December 8, 2011 at 12:31pm.
Finding area under a curve
From [1,3]
2x^2 4x +1

Calculus  Reiny, Thursday, December 8, 2011 at 12:51pm
is your curve y = 2x^2  4x + 1 ?
Is your region between the curve and the xaxis within your stated domain ?
Did you notice that the parabola has an xintercept within your domain?

Calculus  Tim, Thursday, December 8, 2011 at 1:09pm
its from 1 to 3 on the x axis including when it crosses underneath, you subtract that (its like negative area)
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