定积分f(0->ln2) e^x(1+e^x)^2 dx

2025-01-03 16:01:53
推荐回答(1个)
回答1:

原式
=∫[0→ln2](1+e^x)^2 d(e^x+1)
=1/3 (1+e^x)^3 |[0→ln2]
=1/3 (27-8)
=19/3