Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §7.3 Trigonometric Substitutions, #8 · Calculus · Techniques of integration

… (see 7.2.62)

Integrate by substitution. Change $θ$ back to $x$ .

$\int x^{2} + a^{2} d x$ (see 7.2.62)

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §7.3 Trigonometric Substitutions, #8

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