如图,求不定积分,最好写在纸上!谢谢!

2025-05-09 01:15:37
推荐回答(1个)
回答1:

∫dx/x²(1+x²)
=∫[1/x² - 1/(1+x²)]dx
=∫dx/x² - ∫dx/(1+x²)
= -1/x - arctanx + C