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Beliebt Rechnen >

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

Lösung

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

Lösung

x^{2} + 1 + 2 ln x^{2} + 1 + x + C

Schritte zur Lösung

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

Multipliziere aus

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

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

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

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

= x^{2} + 1 + 2 ln x^{2} + 1 + x

Füge eine Konstante zur Lösung hinzu

= x^{2} + 1 + 2 ln x^{2} + 1 + x + C

Graph

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