有双曲三角函数: sinhx=2ex−e−x coshx=2ex+e−x tanhx=coshxsinhx 反双曲三角函数: sinh−1x=ln(x+x2+1) cosh−1x=ln(x+x2−1) tanh−1x=21ln1−x1+x 求导公式: (sin−1x)′=1−x21 (sinh−1x)′=x2+11 (cosh−1x)′=x2−11 (tan−1x)′=1+x21 (tanh−1x)′=1−x21