What is the integral of 1/(xsqrt(x^2-144)) ?

The integral of 1/(xsqrt(x^2-144)) is 1/12 arcsec(1/12 x)+C

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integral of 1/(xsqrt(x^2-144))

\int \frac{1}{x x ^{2} - 144} d x

\frac{1}{12} arcsec (\frac{1}{12} x) + C

Solution steps

\int \frac{1}{x x ^{2} - 144} d x

Apply Trigonometric Substitution

= \int \frac{1}{12} d u

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= \frac{1}{12} \cdot \int 1 d u

Integral of a constant:

\int a d x = a x

= \frac{1}{12} \cdot 1 \cdot u

Substitute back

u = arcsec (\frac{1}{12} x)

= \frac{1}{12} \cdot 1 \cdot arcsec (\frac{1}{12} x)

Simplify

= \frac{1}{12} arcsec (\frac{1}{12} x)

Add a constant to the solution

= \frac{1}{12} arcsec (\frac{1}{12} x) + C

What is the integral of 1/(xsqrt(x^2-144)) ?
The integral of 1/(xsqrt(x^2-144)) is 1/12 arcsec(1/12 x)+C