Thomas' Calculus by George B. Thomas Jr.

A comprehensive undergraduate calculus textbook that develops limits, continuity, derivatives, and integrals from first principles through multivariable topics, combining clear explanations and accessible proofs with numerous worked examples and exercises; coverage includes techniques and applications of differentiation and integration, sequences and series, parametric and polar coordinates, and vector calculus, with an emphasis on geometric intuition and problem-solving strategies for engineers, scientists, and mathematics students.

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