Article by Marius Drăgan,Neculai Stanciu-Romania AN USEFUL TRIGONOMETRIC SUBSTITUTION TO PROVE ALGEBRAIC INEQUALITIES

#### ABOUT AN INEQUALITY BY CHUYEN HA NAM-I

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY CHUYEN HA NAM-I

#### ABOUT AN INEQUALITY BY HUNG NGUYEN VIET-I

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY HUNG NGUYEN VIET-I

#### ABOUT AN INEQUALITY BY HOANG LE NHAT TUNG-IV

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY HOANG LE NHAT TUNG-IV

#### AN AMAZING FUNCTIONAL EQUATION

Proposed by Krisna Sharma-India AN AMAZING FUNCTIONAL EQUATION Solution by proposer

#### ABOUT AN INEQUALITY BY VASILE MIRCEA POPA-II

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY VASILE MIRCEA POPA-II

#### ABOUT AN INEQUALITY BY OCTAVIAN PURCARU

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY OCTAVIAN PURCARU

#### ABOUT AN INEQUALITY BY HOANG LE NHAT TUNG-II

Math Note by Marin Chirciu-Romania ABOUT AN INEQUALITY BY HOANG LE NHAT TUNG-II