What is the integral of ((sqrt(x^2-4)))/x ?

The integral of ((sqrt(x^2-4)))/x is -2arcsec(1/2 x)+sqrt(x^2-4)+C

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integral of ((sqrt(x^2-4)))/x

\int \frac{( x ^{2} - 4 )}{x} d x

- 2 arcsec (\frac{1}{2} x) + x^{2} - 4 + C

Solution steps

\int \frac{x ^{2} - 4}{x} d x

Apply Trigonometric Substitution

: \int 2 tan^{2} (u) d u

= \int 2 tan^{2} (u) d u

Take the constant out:

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

= 2 \cdot \int tan^{2} (u) d u

Rewrite using trig identities

= 2 \cdot \int - 1 + sec^{2} (u) d u

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= 2 (- \int 1 d u + \int sec^{2} (u) d u)

\int 1 d u = u

\int sec^{2} (u) d u = tan (u)

= 2 (- u + tan (u))

Substitute back

u = arcsec (\frac{1}{2} x)

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

Simplify

2 (- arcsec (\frac{1}{2} x) + tan (arcsec (\frac{1}{2} x))) : - 2 arcsec (\frac{1}{2} x) + x^{2} - 4

= - 2 arcsec (\frac{1}{2} x) + x^{2} - 4

Add a constant to the solution

= - 2 arcsec (\frac{1}{2} x) + x^{2} - 4 + C

\frac{d}{d x} (\frac{8 x ^{2} + 8 x + 8}{x})

\frac{d}{d x} (x^{3} sinh^{2} (x) + cosh^{2} (x^{3}))

\int \frac{x ^{3}}{a ^{4} + x ^{4}} d x

f (x) = - 4 - 2 x^{2}, at x = - 3

x \to \infty lim (x r^{x})

What is the integral of ((sqrt(x^2-4)))/x ?
The integral of ((sqrt(x^2-4)))/x is -2arcsec(1/2 x)+sqrt(x^2-4)+C