What is the integral of (sqrt(x^2-15))/(x^3) ?

The integral of (sqrt(x^2-15))/(x^3) is -(sqrt(x^2-15))/(2x^2)+1/(2sqrt(15))arcsec(1/(sqrt(15))x)+C

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integral of (sqrt(x^2-15))/(x^3)

\int \frac{x ^{2} - 15}{x ^{3}} d x

- \frac{x ^{2} - 15}{2 x ^{2}} + \frac{1}{2 15} arcsec (\frac{1}{15} x) + C

Solution steps

\int \frac{x ^{2} - 15}{x ^{3}} d x

Apply Integration By Parts

: - \frac{x ^{2} - 15}{2 x ^{2}} - \int - \frac{1}{2 x x ^{2} - 15} d x

= - \frac{x ^{2} - 15}{2 x ^{2}} - \int - \frac{1}{2 x x ^{2} - 15} d x

\int - \frac{1}{2 x x ^{2} - 15} d x = - \frac{1}{2 15} arcsec (\frac{1}{15} x)

= - \frac{x ^{2} - 15}{2 x ^{2}} - (- \frac{1}{2 15} arcsec (\frac{1}{15} x))

Simplify

= - \frac{x ^{2} - 15}{2 x ^{2}} + \frac{1}{2 15} arcsec (\frac{1}{15} x)

Add a constant to the solution

= - \frac{x ^{2} - 15}{2 x ^{2}} + \frac{1}{2 15} arcsec (\frac{1}{15} x) + C

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What is the integral of (sqrt(x^2-15))/(x^3) ?
The integral of (sqrt(x^2-15))/(x^3) is -(sqrt(x^2-15))/(2x^2)+1/(2sqrt(15))arcsec(1/(sqrt(15))x)+C