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.
The branch of mathematics that deals with limits and the differentiation and integration of functions of one or more variables. See more at calculus of variations, differential calculus, integral calculus. A solid mass, usually composed of inorganic material, formed in a cavity or tissue of the body.