2 / | | / 2\ | \x - 3*x /*1 dx | / 1
Integral((x - 3*x^2)*1, (x, 1, 2))
/ | 2 | / 2\ x 3 | \x - 3*x /*1 dx = C + -- - x | 2 /
-11/2
=
-5.5
Use the examples entering the upper and lower limits of integration.