This is an introduction to mathematical computation that examines a broad array of techniques in the area, from scientific to symbolic to graphical. The book also introduces topics such as implicit and parametric representations, interpolation, approximation, sampling, filtering, reconstruction and integration. Although it is targeted to students in the pure and applied sciences, mathematics and computer science, the book is designed to be accessible to undergraduates at all levels, having a minimum of prerequisites (essentially single-variable calculus).