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.
Calculus A hard deposit attached to the teeth, usually consisting of mineralized bacterial plaque. Caries An infectious microbiological disease that results in localized dissolution and destruction of the calcified tissues of the teeth.