Not every professor covers every example. The manual helps bridge the gap between lecture notes and homework requirements.
Use MATLAB’s symbolic toolbox or Python’s sympy and scipy.signal to verify convolution, Fourier transforms, and filter designs. The textbook’s own examples can be recoded and tested. Not every professor covers every example
The exercises at the end of each chapter range from simple substitution problems to complex, multi-step derivations that test not just memory, but conceptual synthesis. It is within these problem sets that the "solutions manual" becomes a tempting resource. Not every professor covers every example