Document Type : Original Article
Authors
1 profecssor of Mathematics and Vicc - Dcan for higher Studies Faculty of Science, Zagazig University.
2 Professor Of Mathcrnatics, Dcpartmcnt of Enginccring Basic Science, ~ac& of Enginccring, Mcnufia Univcrsity.
3 teaching Assistant, Department of Basic Engineering Science, Higher Technologjcal lnstitutc, Tenth of Ramadan City.
Abstract