1, for details. Zhang Yu speaks well about solving differential equations, indefinite integrals and definite integrals. The first lecture takes you to do on the spot, so that students can lay a solid foundation.

2. Rich teaching experience. Zhang Yu is a math teacher who set sail for the postgraduate entrance examination. Engaged in advanced mathematics teaching and postgraduate counseling for many years. She has rich experience in preparing lessons and can grasp the types of questions and questions.