This ebook helps students catch up on knowledge of multiple variable calculus by showing them 50 typical problems with use of double integrals, solved step-by-step. It is well-suited for use in independent study and exam prep! Topics include: Definition and Properties of Double Integrals, Iterated Integrals, Double Integrals over Rectangular Regions, Double Integrals over General Regions, Change of Variables in Double Integrals, Integration in Polar Coordinates, and Applications of Double Integrals. Each of the chapters includes appropriate definitions and formulas followed by solved problems. Studying and solving these problems helps you cut study time, increase problems-solving skills and achieve your personal best on calculus exams!