Engineering researchers frequently utilize advanced mathematics, particularly complex analysis and Fourier analysis, in fields like aerodynamics and signal processing. Topology has niche applications, especially in nonlinear dynamical systems, though it is less commonly used overall. While some advanced math topics like set and number theory are not widely applicable in engineering, vector and tensor analysis are critical in various research areas. The discussion highlights the importance of applied math in engineering, particularly for those interested in signal processing and control systems. Mastery of Fourier analysis and related techniques is recommended for aspiring researchers in these fields.