Formulas of Sequence and Series



The term of the Arithmetic Progression (A.P) is given by .





The arithmetic mean between and is given by .





If denotes the sum up to terms of A.P. then where stands for the last term,





The sum of A.M’s between and is .





The term of the geometric progression is .





The geometric mean between and is .





If denotes the sum up to terms of G.P is , where





The sum of infinite geometric series is





The term of the harmonic progression is .





The harmonic mean between and is .




and ; where are usual notations.
