Question

Integral de x*(1+x^3)dx?

Answer 1

ʃ x(1 + x^3)dx
= ʃ (x^4 + x)dx
= ʃ x^4dx + ʃ xdx
ʃ x^4dx = x^5/5
ʃ xdx = x^2/2
= x^5/5 + x^2/2
= x^5/5 + x^2/2 + C(constante)