求解定积分步骤详细

2025-04-29 01:33:01
推荐回答(2个)
回答1:

回答2:

原式=xarctanx|(0,1)-∫(0,1)x/(1+x²)dx
=π/4 -1/2ln(1+x²)|(0,1)
=π/4 -1/2 (ln2)