Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §7.2 Trigonometric Integrals, #32 · Calculus · Techniques of integration

… (by parts)

Compute the indefinite integrals first, then the definite integrals.

$\int_{0}^{π} x cos x d x$ (by parts)

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §7.2 Trigonometric Integrals, #32

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