谁能帮我integrate .....∫1/cosα dα[thunder (2-17 11:42, Long long ago)] [ 传统版 | sForum ][登录后回复]1楼

就是\int(sec\alpha)
=ln(tan\alpha+sec\alpha)

\int is integration sign[icky (2-17 12:15, Long long ago)] [ 传统版 | sForum ][登录后回复]2楼