integral from 0 to 2 of 4axe^{ax^2}

Lösung

\int_{0}^{2} 4 a x e^{a x^{2}} d x

2 (e^{4 a} - 1)

Schritte zur Lösung

\int_{0}^{2} 4 a x e^{a x^{2}} d x

Entferne die Konstante:

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

= 4 a \cdot \int_{0}^{2} x e^{a x^{2}} d x

Wende U-Substitution an

= 4 a \cdot \int_{0}^{4 a} \frac{e ^{u}}{2 a} d u

Entferne die Konstante:

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

= 4 a \frac{1}{2 a} \cdot \int_{0}^{4 a} e^{u} d u

Nutze das gemeinsame Integral :

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

= 4 a \frac{1}{2 a} [e^{u}]_{0}^{4 a}

Vereinfache

4 a \frac{1}{2 a} [e^{u}]_{0}^{4 a} : 2 [e^{u}]_{0}^{4 a}

= 2 [e^{u}]_{0}^{4 a}

Berechne die Grenzen:

e^{4 a} - 1

= 2 (e^{4 a} - 1)

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