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Beliebt Rechnen >

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

Lösung

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

Lösung

\frac{1}{2} ln ∣ x ∣ - \frac{1}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{24} + C

Schritte zur Lösung

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

Entferne die Konstante:

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

= \frac{1}{2} \cdot \int \frac{( x - \frac{1}{2} x ^{2} ) ^{2}}{x ^{2}} d x

Multipliziere aus

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

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

\int \frac{1}{x} d x = ln ∣ x ∣

\int x d x = \frac{2}{3} x^{\frac{3}{2}}

\int \frac{x ^{2}}{4} d x = \frac{x ^{3}}{12}

= \frac{1}{2} (ln ∣ x ∣ - \frac{2}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{12})

Vereinfache

\frac{1}{2} (ln ∣ x ∣ - \frac{2}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{12}) : \frac{1}{2} ln ∣ x ∣ - \frac{1}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{24}

= \frac{1}{2} ln ∣ x ∣ - \frac{1}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{24}

Füge eine Konstante zur Lösung hinzu

= \frac{1}{2} ln ∣ x ∣ - \frac{1}{3} x^{\frac{3}{2}} + \frac{x ^{3}}{24} + C

Graph

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