Question

问一道利用奇偶性求定积分的题目最好能写出具体解题步骤,

Answer 1

∫(-1->2) xe^(x^2)dx

=1/2 ∫(-1->2) e^(x^2)d(x^2)

=1/2 e^(x^2) | (-1->2)

=(e^4-e)/2