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Beliebt Rechnen >

integral of (ln(x))/(x(2-ln(x)))

Lösung

\int \frac{ln ( x )}{x ( 2 - ln ( x ) )} d x

Lösung

2 - ln (x) - 2 ln ∣ 2 - ln (x) ∣ + C

Schritte zur Lösung

\int \frac{ln ( x )}{x ( 2 - ln ( x ) )} d x

Wende U-Substitution an

= \int - \frac{- u + 2}{u} d u

Entferne die Konstante:

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

= - \int \frac{- u + 2}{u} d u

Multipliziere aus

\frac{- u + 2}{u} : - 1 + \frac{2}{u}

= - \int - 1 + \frac{2}{u} d u

Wende die Summenregel an:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= - (- \int 1 d u + \int \frac{2}{u} d u)

\int 1 d u = u

\int \frac{2}{u} d u = 2 ln ∣ u ∣

= - (- u + 2 ln ∣ u ∣)

Setze in

u = 2 - ln (x)

ein

= - (- (2 - ln (x)) + 2 ln ∣ 2 - ln (x) ∣)

Vereinfache

= 2 - ln (x) - 2 ln ∣ 2 - ln (x) ∣

Füge eine Konstante zur Lösung hinzu

= 2 - ln (x) - 2 ln ∣ 2 - ln (x) ∣ + C

Graph

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