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Beliebt Rechnen >

integral from 1 to 2 of 6r^4ln(r)

Lösung

\int_{1}^{2} 6 r^{4} ln (r) d r

Lösung

6 (- \frac{31}{25} + \frac{32}{5} ln (2))

+1

Dezimale

19.17685 \dots

Schritte zur Lösung

\int_{1}^{2} 6 r^{4} ln (r) d r

Entferne die Konstante:

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

= 6 \cdot \int_{1}^{2} r^{4} ln (r) d r

Wende die partielle Integration an

= 6 [\frac{1}{5} r^{5} ln (r) - \int \frac{r ^{4}}{5} d r]_{1}^{2}

\int \frac{r ^{4}}{5} d r = \frac{r ^{5}}{25}

= 6 [\frac{1}{5} r^{5} ln (r) - \frac{r ^{5}}{25}]_{1}^{2}

Berechne die Grenzen:

- \frac{31}{25} + \frac{32}{5} ln (2)

= 6 (- \frac{31}{25} + \frac{32}{5} ln (2))

Graph

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