Primitive of Reciprocal of a squared minus x squared/Logarithm Form 2/Also presented as

Primitive of $\frac 1 {a^2 - x^2}$: Logarithm Form 2: Also presented as

This result is also seen presented in the form:

$\ds \int \frac {\d x} {a^2 - x^2} = \dfrac 1 {2 a} \ln \size {\dfrac {x + a} {x - a} } + C$

Sources

• 1968: George B. Thomas, Jr.: Calculus and Analytic Geometry (4th ed.) ... (previous) ... (next): Front endpapers: A Brief Table of Integrals: $18$.