This manuscript presents a new approach to accurately calculating exponential integral function that arises in many applications such as contamination, groundwater flow, hydrological problems and mathematical physics. The calculation is obtained with easily computed components without any restrictive assumptions A detailed comparison of the execution times performed. calculated results by sugge...

One of the important abilities that students need to master when learning mathematics is mathematical representation. This ability will improve students' understanding concepts, principles and procedures in solving problems. But reality, many have difficulty conveying their ideas solve problems this has an impact on research aims describe low representation factors caused this. The type used de...