三角函数的不定积分总结

secx

secx

\[\int {secx} dx = \ln(secx+tanx) + C\]

sec^2x

\[\int {sec^2x} dx = tanx + C\]

sec^3x

sec^4x

tanx

tanx

\[\int {tanx} dx = - \ln(cosx) + C\]