"Differentiability" . "continuously differentiable function" . "differentiable function" . . "complex differentiable" . . . "Continuously differentiable function" . "twice-differentiable function" . "continuously differentiable" . . "differentiable function#continuously differentiable" . "differentiability" . "differentiable" . . . . "Differentiable function" . "i.e. continuously differentiable" . "differentiable scalar function" . "Differentiable function#Differentiability classes" . "differentiable (scalar) function" . . "Differentiability classes" . . "Differentiable function" . . "differentiability of functions" . "smooth" . "differentiabilily" . . "Differentiability and continuity" . .