関連ワード:  differentiation of cosh^-1    differentiation of cosh 1x    derivative of cosh 1    differentiation of sinh 1x    derivative of cosh 1 secx    derivative of cosh 1 x 3    differentiation of sinh-1    derivative of cosh 1 2x    derivative of cosh^-1 ( x^2)    derivative of sinh 1 cosh x