求定积分,求各路大神帮帮忙,稍微详细点的解答过程,本人学渣

2025-05-06 08:10:32
推荐回答(1个)
回答1:

=∫(0到1)u/e^(2u/3)de^u
=∫ue^(u/3)du
=3∫ude^(u/3)
=3ue^(u/3)-3∫e^(u/3)du
=3ue^(u/3)-3e^(u/3)
=0-(-3)
=3