f(x) = e^x·x^2
Formansatz
F(x) = e^x·(a·x^2 + b·x + c)
F'(x) = e^x·(a·x^2 + (2·a + b)·x + (b + c))
Bei dir gilt
a = 1
2·a + b = 0
b + c = 0 --> a = 1 ∧ b = -2 ∧ c = 2
F(x) = e^x·(x^2 - 2·x + 2)
∫ (-4 bis 0) f(x) dx = F(0) - F(-4) = 2 - 26·e^(-4) = 1.524