scipy.special
scipy.special.expi
scipy.special.sici
scipy.special.
shichi
Hyperbolic sine and cosine integrals
shi
integral(sinh(t)/t, t=0..x)
chi
eul + ln x + integral((cosh(t)-1)/t, t=0..x) where eul is Euler’s constant.
eul + ln x + integral((cosh(t)-1)/t, t=0..x)
eul