Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §7.2 Trigonometric Integrals, #35 · Calculus · Techniques of integration

In 33, the series also equals … from … to …, because…

In 33, the series also equals $x$ from $- π$ to $0$ , because all functions are odd. Sketch the "sawtooth function," which equals $x$ from $- π$ to $π$ and then has period $2 π$ . What is the sum of the sine series at $x = π$ ?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §7.2 Trigonometric Integrals, #35

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