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Beliebt Rechnen >

integral of (x^2+1)/(x^2-4)

Lösung

\int \frac{x ^{2} + 1}{x ^{2} - 4} d x

Lösung

- \frac{5}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1) + x + C

Schritte zur Lösung

\int \frac{x ^{2} + 1}{x ^{2} - 4} d x

\frac{x ^{2} + 1}{x ^{2} - 4} = \frac{5}{x ^{2} - 4} + 1

= \int \frac{5}{x ^{2} - 4} + 1 d x

Wende die Summenregel an:

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

= \int \frac{5}{x ^{2} - 4} d x + \int 1 d x

\int \frac{5}{x ^{2} - 4} d x = - \frac{5}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1)

\int 1 d x = x

= - \frac{5}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1) + x

Füge eine Konstante zur Lösung hinzu

= - \frac{5}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1) + x + C

Graph

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