Calculation of Derivative.

Keyword Derivative,Hyperbolic cosecant curve.

Reference [1]：オーム社編：『機械工学公式集』,オーム社,pp.20,1960.

Remarks ・LaTeX： \frac{d}{dx}\textup{cosech}\, x=-\textup{cosech}\, x\textup{coth}\,x\; , \textup{cosech}\, x=\frac{1}{\textup{sinh}\, x}\; ,\\\textup{coth}\, x=\frac{1}{\textup{tanh\,x}} ・Making above Equation Image is powered by CODECOGS

History ・2010/02/26：Upload.