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Beliebt Rechnen >

integral from 1 to R of (ln(4x))/(x^2)

Lösung

\int_{1}^{R} \frac{ln ( 4 x )}{x ^{2}} d x

Lösung

\frac{- ln ( 4 R ) - 1}{R} + 2 ln (2) + 1

Schritte zur Lösung

\int_{1}^{R} \frac{ln ( 4 x )}{x ^{2}} d x

Wende die partielle Integration an

= [- \frac{ln ( 4 x )}{x} - \int - \frac{1}{x ^{2}} d x]_{1}^{R}

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

= [- \frac{ln ( 4 x )}{x} - \frac{1}{x}]_{1}^{R}

Da die Nenner gleich sind, fasse die Brüche zusammen.:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= [\frac{- ln ( 4 x ) - 1}{x}]_{1}^{R}

Berechne die Grenzen:

\frac{- ln ( 4 R ) - 1}{R} + 2 ln (2) + 1

= \frac{- ln ( 4 R ) - 1}{R} + 2 ln (2) + 1

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