Differential equations

Difference equations "Kelley, Walter G." Finite mathematics for business, economics, life sciences, and social sciences Barnett, Raymond A. SAT subject test KAPLAN A concise handbook of mathematics, physics, and engineering sciences edited by Andrei D. Polyanin, Alexei I. Chernoutsan ; authors, A.I. Chernoutsan ... [et al.] Handbook of applicable mathematics chief editor, Walter Ledermann-Steven Vajda- Applied mathematics for business, economics, and the social sciences Budnick, Frank S. Conics, books V to VII Apollonius Encyclopedia of mathematics Tanton, James Stuart