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Beliebt Rechnen >

integral from 0 to 1 of xe^{-5x}

Lösung

\int_{0}^{1} x e^{- 5 x} d x

Lösung

- \frac{- e ^{5} + 6}{25 e ^{5}}

+1

Dezimale

0.03838 \dots

Schritte zur Lösung

\int_{0}^{1} x e^{- 5 x} d x

Wende U-Substitution an

= \int_{0}^{- 5} \frac{e ^{u} u}{25} d u

\int_{a}^{b} f (x) d x = - \int_{b}^{a} f (x) d x, a < b

= - \int_{- 5}^{0} \frac{e ^{u} u}{25} d u

Entferne die Konstante:

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

= - \frac{1}{25} \cdot \int_{- 5}^{0} e^{u} u d u

Wende die partielle Integration an

= - \frac{1}{25} [e^{u} u - \int e^{u} d u]_{- 5}^{0}

\int e^{u} d u = e^{u}

= - \frac{1}{25} [e^{u} u - e^{u}]_{- 5}^{0}

Berechne die Grenzen:

- 1 + \frac{6}{e ^{5}}

= - \frac{1}{25} (- 1 + \frac{6}{e ^{5}})

Vereinfache

= - \frac{- e ^{5} + 6}{25 e ^{5}}

Graph

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