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Beliebt Rechnen >

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

Lösung

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

Lösung

\frac{1}{4} (2 x^{2} + ln ∣ x ∣) + C

Schritte zur Lösung

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

Vereinfache

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

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

Entferne die Konstante:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

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

Multipliziere aus

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

= \frac{1}{4} \cdot \int 4 x + \frac{1}{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

= \frac{1}{4} (\int 4 x d x + \int \frac{1}{x} d x)

\int 4 x d x = 2 x^{2}

\int \frac{1}{x} d x = ln ∣ x ∣

= \frac{1}{4} (2 x^{2} + ln ∣ x ∣)

Füge eine Konstante zur Lösung hinzu

= \frac{1}{4} (2 x^{2} + ln ∣ x ∣) + C

Graph

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