A solid grasp of differential calculus's core ideas and the development of analytical skills are crucial for students who want to pursue careers in engineering. The "Skills in Mathematics for JEE Main & Advanced" series aids aspirants in their learning and approach to solving mathematical issues. For a solid foundation in the Differential Calculus techniques, the new edition of "Skills in Mathematics for JEE Main & Advanced- DIFFERENTIAL CALCULUS" has been prepared with session-by-session theory & exercises. Each chapter features a learning section with a tiny divide of sessions & exercises for methodically reviewing the entire chapter. This section is infused with the full covering of syllabi. After the theory, the Practice Part, which has been compiled with JEE Type Examples & chapter exercises, can be used to assess knowledge.