∫1⼀(1+cos^2 x) dx

谢谢啦
2024-12-21 03:06:14
推荐回答(1个)
回答1:

∫1/(1+cos^2 x) dx
=∫sec^2x/(sec^2x +1) dx
=∫1/(tan^2x+2) dtanx
=1/√2 arctan(tanx/√2)+c