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Beliebt Rechnen >

integral from 7 to 8 of e^{7-x}

Lösung

\int_{7}^{8} e^{7 - x} d x

Lösung

1 - \frac{1}{e}

+1

Dezimale

0.63212 \dots

Schritte zur Lösung

\int_{7}^{8} e^{7 - x} d x

Wende U-Substitution an

= \int_{0}^{- 1} - e^{u} d u

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

= - \int_{- 1}^{0} - e^{u} d u

Entferne die Konstante:

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

= - (- \int_{- 1}^{0} e^{u} d u)

Nutze das gemeinsame Integral :

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

= - (- [e^{u}]_{- 1}^{0})

Vereinfache

= [e^{u}]_{- 1}^{0}

Berechne die Grenzen:

1 - \frac{1}{e}

= 1 - \frac{1}{e}

Graph

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