**Author details**

Mohammed Abu Saleem Department of Mathematics, Faculty of Science, Al-Balqa Applied University, Salt, Jordan

\*Address all correspondence to: m\_abusaleem@bau.edu.jo

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
