[SOLVED] Online Definite Integral Calculators faulty?
I've been looking at two online calculators of Definite Integrals and I'm wondering if they can't handle limits that cross the x-axis
My solution is that the area is 2.4486 (being 1.989 + 0.459 area below axis added to area above axis)
But if you use either of these two popular online Integral calculators
Find the Numerical Answer to a Definite Integral - WebMath
Definite Integral Calculator at SolveMyMath.com
they give a result of -1.53 (negative area subtract smaller positive area)
So are they wrong? or is there a different purpose for this negative result?