Răspuns:
Explicație pas cu pas:
1) ∫cos(x/3) dx = 3sin(x/3), punand limitele:
3(sin(pi/6) - sin0) = 3*1/2 = 3/2
2) ∫(x^3 +2x -4)dx = x^4/4 +x^2 -4x, punand limitele:
1/4*(√2)^4 + (√2)^2 - 4√2 - 1/4 -1 +4 =
1 + 2 -4√2 -1/4 +3 = 6-1/4 -4√2 = 23/4 - 4√2
