Engineering Mathematics 3A is designed to provide students with a deeper understanding of mathematical concepts required in engineering applications. The course covers multivariable calculus (partial derivatives, multiple integrals), vector calculus (gradient, divergence, curl), and ordinary differential equations with applications. Students are introduced to mathematical modeling of physical systems and techniques used in electrical and mechanical engineering. Emphasis is placed on analytical methods, interpretation of results, and real-world problem solving. By the end of the course, students will be able to apply advanced mathematical tools to analyze complex engineering problems and support design and research activities.