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

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

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integral of (sec^2(arcsec(x)))/(xsqrt(x^2-1))

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

x^{2} - 1 + C

Solution steps

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

Simplify

\frac{sec ^{2} ( arcsec ( x ) )}{x x ^{2} - 1} : \frac{x}{x ^{2} - 1}

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

Apply u-substitution

= \int \frac{1}{2 u} d u

Take the constant out:

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

= \frac{1}{2} \cdot \int \frac{1}{u} d u

Apply the Power Rule

= \frac{1}{2} \cdot 2 u^{\frac{1}{2}}

Substitute back

u = x^{2} - 1

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

Simplify

\frac{1}{2} \cdot 2 (x^{2} - 1)^{\frac{1}{2}} : x^{2} - 1

= x^{2} - 1

Add a constant to the solution

= x^{2} - 1 + C

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