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

Lösung

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

\frac{x ^{2}}{2} + 2 x + 4 ln ∣ x ∣ + C

Schritte zur Lösung

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

Multipliziere aus

\frac{x ^{2} + 2 x + 4}{x} : x + 2 + \frac{4}{x}

= \int x + 2 + \frac{4}{x} 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 x d x + \int 2 d x + \int \frac{4}{x} d x

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

\int 2 d x = 2 x

\int \frac{4}{x} d x = 4 ln ∣ x ∣

= \frac{x ^{2}}{2} + 2 x + 4 ln ∣ x ∣

Füge eine Konstante zur Lösung hinzu

= \frac{x ^{2}}{2} + 2 x + 4 ln ∣ x ∣ + C

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