Hello my friend, Professor Ahmed is a teacher of mathematics and differentiation and integration for more than 19 years, during which I taught all branches of mathematics, differentiation and integration.I have students from different countries of the world, most of them from America, Canada, Australia, Saudi Arabia, the Emirates, Qatar, Bahrain, the Sultanate of Oman, and Kuwait. I achieved excellent results with them and they are still continuing. I expect that you want someone to solve test questions with you, and this is my primary job, in addition to helping in solving assignments. I await your contact.