求解不定积分:∫1⼀(1+x^2)dx ∫x⼀(1+x^2)dx

2024-11-06 15:34:35
推荐回答(1个)
回答1:

∫1/(1+x^2)dx
=arctanx+C
∫x/(1+x^2)dx
=(1/2)∫1/(1+x²)d(1+x²)
=(1/2)ln(1+x²)+C