määrätty integraali 0:sta 4:een

Teht. 460

a = 0.0234 (slider from -1 to 1, step 1.0E-4)
f(x) = If[0 ≤ x ≤ 4, (a * ((-x^(3)) + (2 * x^(2)) + (8 * x))), 0]
teksti1 = LaTeX(f, true, true)
b = Integral(f, 0, 4)