1. Department of Basic Sciences, Obour High Institute for Management & Informatics, Egypt
2. Department of Basic Sciences, High Raya Institute, Damietta 34511, Egypt
3. Department of Quantitative Analysis, College of Business Administration, King Saud University, P.O. Box 71115, Riyadh 11587, Saudi Arabia
4. Department of Mathematics, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
5. Department of Mathematics, Faculty of Science, Mansoura University, Mansoura 35516, Egypt