DLMF:

Figure 4.29.6 (See in context.)

Figure 4.29.6: Principal values of $\mathop{\mathrm{arccsch}\/}\nolimits x$ and $\mathop{\mathrm{arcsech}\/}\nolimits x$ . ( $\mathop{\mathrm{arcsech}\/}\nolimits x$ is complex when

and

Annotations:

Symbols:: $\mathop{\mathrm{arccsch}\/}\nolimits z$ : inverse hyperbolic cosecant function, $\mathop{\mathrm{arcsech}\/}\nolimits z$ : inverse hyperbolic secant function and : real variable
A&S Ref:: AMS55 (Figure 4.8)
Permalink:: http://dlmf.nist.gov/4.29.F6.mag
Encodings:: Magnified png, pdf