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Beliebt Rechnen >

integral of (4x-2)/(x^3-x)

Lösung

\int \frac{4 x - 2}{x ^{3} - x} d x

Lösung

2 ln ∣ x ∣ - 3 ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣ + C

Schritte zur Lösung

\int \frac{4 x - 2}{x ^{3} - x} d x

Ermittle den Partialbruch von

\frac{4 x - 2}{x ^{3} - x} : \frac{2}{x} - \frac{3}{x + 1} + \frac{1}{x - 1}

= \int \frac{2}{x} - \frac{3}{x + 1} + \frac{1}{x - 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{2}{x} d x - \int \frac{3}{x + 1} d x + \int \frac{1}{x - 1} d x

\int \frac{2}{x} d x = 2 ln ∣ x ∣

\int \frac{3}{x + 1} d x = 3 ln ∣ x + 1 ∣

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

= 2 ln ∣ x ∣ - 3 ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣

Füge eine Konstante zur Lösung hinzu

= 2 ln ∣ x ∣ - 3 ln ∣ x + 1 ∣ + ln ∣ x - 1 ∣ + C

Graph

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