integral from 0 to 1 of x^3e^{yx^2}

Lösung

\int_{0}^{1} x^{3} e^{y x^{2}} d y

x (e^{x^{2}} - 1)

Schritte zur Lösung

\int_{0}^{1} x^{3} e^{y x^{2}} d y

Entferne die Konstante:

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

= x^{3} \cdot \int_{0}^{1} e^{x^{2} y} d y

Wende U-Substitution an

= x^{3} \cdot \int_{0}^{x^{2}} \frac{e ^{u}}{x ^{2}} d u

Entferne die Konstante:

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

= x^{3} \frac{1}{x ^{2}} \cdot \int_{0}^{x^{2}} e^{u} d u

Nutze das gemeinsame Integral :

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

= x^{3} \frac{1}{x ^{2}} [e^{u}]_{0}^{x^{2}}

Vereinfache

x^{3} \frac{1}{x ^{2}} [e^{u}]_{0}^{x^{2}} : x [e^{u}]_{0}^{x^{2}}

= x [e^{u}]_{0}^{x^{2}}

Berechne die Grenzen:

e^{x^{2}} - 1

= x (e^{x^{2}} - 1)

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