Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §7.3 Trigonometric Substitutions, #15 · Calculus · Techniques of integration

### *17

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

$\int \frac{d x}{( x ^{2} - 9 ) ^{3/2}}$

### *16
$\int \frac{1 + x ^{2} d x}{x}$

### *17
$\int \frac{x ^{2} d x}{x ^{2} - 1}$

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §7.3 Trigonometric Substitutions, #15

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