∫f(x)⼀(x^2+1)dx=ln(x^2+1)+c 则f(x)=?

2025-06-28 05:32:38
推荐回答(1个)
回答1:

f(x)=[ln(x^2+1)]'*(x^2+1)
=2x/(x^2+1)*(x^2+1)
=2x