integral from 1 to e of x^2*ln(x)

Lösung

\int_{1}^{e} x^{2} \cdot ln (x) d x

\frac{2 e ^{3} + 1}{9}

Dezimale

4.57456 \dots

Schritte zur Lösung

\int_{1}^{e} x^{2} ln (x) d x

Wende die partielle Integration an

= [\frac{1}{3} (x^{3} ln (x) - 3 \cdot \int \frac{x ^{2}}{3} d x)]_{1}^{e}

\int \frac{x ^{2}}{3} d x = \frac{x ^{3}}{9}

= [\frac{1}{3} (x^{3} ln (x) - 3 \cdot \frac{x ^{3}}{9})]_{1}^{e}

3 \cdot \frac{x ^{3}}{9} = \frac{x ^{3}}{3}

= [\frac{1}{3} (x^{3} ln (x) - \frac{x ^{3}}{3})]_{1}^{e}

Berechne die Grenzen:

\frac{2 e ^{3}}{9} + \frac{1}{9}

= \frac{2 e ^{3}}{9} + \frac{1}{9}

Vereinfache

= \frac{2 e ^{3} + 1}{9}

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