Kelly's story is truly inspirational. Kelly has shown that pure determination, dedication and hard work can and does change a person's life. At Life Leisure we have loved being part of Kelly's journey.
In calculus (a branch of mathematics), a differentiable function of one real variable is a function whose derivative exists at each point in its domain.
Mathematics. 1  an independent variable of a function. 2  Also called amplitude. the angle made by a given vector with the reference axis. 3  the angle corresponding to a point representing a given complex number in polar coordinates. Compare principal argument.