DLMF:

Figure 4.29.5 (See in context.)

Figure 4.29.5: $\mathop{\mathrm{csch}\/}\nolimits x$ and $\mathop{\mathrm{sech}\/}\nolimits x$ .

Symbols:: $\mathop{\mathrm{csch}\/}\nolimits z$ : hyperbolic cosecant function, $\mathop{\mathrm{sech}\/}\nolimits z$ : hyperbolic secant function and : real variable
A&S Ref:: AMS55 (Figure 4.6)
Permalink:: http://dlmf.nist.gov/4.29.F5.mag
Encodings:: Magnified png, pdf