Author: B.J. Venkatachala
"Functional Equations: A Problem Solving Approach" by B.J. Venkatachala is a widely used book designed to help students master functional equations through problem-solving techniques. It draws heavily from national and international mathematical Olympiads, offering a rich collection of problems and strategies. The book focuses on methods rather than theory alone, making it ideal for competitive exam preparation. It is especially helpful for high school and undergraduate students aiming to develop intuition and skill in solving functional equations efficiently.