INTEGRAL CALCULUS-105 Posted on April 15, 2019April 30, 2019 by ssmrmh Proposed by Daniel Sitaru-Romania INTEGRAL CALCULUS-105 Solution 1 by Mokhtar Khassani-Mostaganem-Algerie, Solution 2 by Avishek Mitra-West Bengal-India, Solution 3 by Nelson Javier Villaherrera Lopez-El Salvador