: Covers both Direct Methods (Ch. 6) and Fixed-Point Iterative Solvers (Ch. 7).

In 2024-2025, many students ask: "Why learn numerical methods when Python’s scipy.optimize or TensorFlow exists?" Wen Shen’s book provides the answer in every chapter. Libraries are black boxes; understanding the conditioning , stability , and convergence of algorithms prevents catastrophic failures in real-world simulations.