This chapter focuses on various techniques used to evaluate complex integrals that cannot be solved using basic formulas alone. Students learn important methods such as substitution, integration by parts, partial fractions, and trigonometric identities. Each method is explained step by step to help students understand when and how to apply the correct technique.

Emphasis is placed on systematic problem-solving, simplification of expressions, and exam-oriented practice. Through worked examples and regular exercises, this chapter enhances analytical skills, improves accuracy, and prepares students to confidently handle integration problems in board exams and competitive examinations.