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

The integral of (x+2)/(x^2-1) is 1/2 ln|x^2-1|-ln|x+1|+ln|x-1|+C

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integral of (x+2)/(x^2-1)

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

\frac{1}{2} ln x^{2} - 1 - ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣ + C

Solution steps

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

Expand

\frac{x + 2}{x ^{2} - 1} : \frac{x}{x ^{2} - 1} + \frac{2}{x ^{2} - 1}

Apply the Sum Rule:

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

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

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

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

= \frac{1}{2} ln x^{2} - 1 - ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣

Add a constant to the solution

= \frac{1}{2} ln x^{2} - 1 - ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣ + C

cos (2 θ)

x \to 0 lim (\frac{8}{\frac{2 + e ^{1}}{x}})

f (x) = 14 x sin (x), at x = \frac{π}{2}

\int \frac{11 x ^{2}}{( 25 + x ^{2} ) ^{2}} d x

\frac{d}{d x} (\frac{1}{x} - 1)

What is the integral of (x+2)/(x^2-1) ?
The integral of (x+2)/(x^2-1) is 1/2 ln|x^2-1|-ln|x+1|+ln|x-1|+C