integral from-3 to x of t^2e^{t^2}

Lösung

\int_{- 3}^{x} t^{2} e^{t^{2}} d t

\frac{x e ^{x^{2}} + 3 e ^{9}}{2} - \frac{π}{4} erfi (x) + \frac{π}{4} erfi (- 3)

Schritte zur Lösung

\int_{- 3}^{x} t^{2} e^{t^{2}} d t

Vereinfache

t^{2} : tt

= \int_{- 3}^{x} tt e^{t^{2}} d t

Wende die partielle Integration an

= [\frac{1}{2} e^{t^{2}} t - \int \frac{1}{2} e^{t^{2}} d t]_{- 3}^{x}

\int \frac{1}{2} e^{t^{2}} d t = \frac{π}{4} erfi (t)

= [\frac{1}{2} e^{t^{2}} t - \frac{π}{4} erfi (t)]_{- 3}^{x}

Berechne die Grenzen:

\frac{1}{2} x e^{x^{2}} - \frac{π}{4} erfi (x) + \frac{3 e ^{9}}{2} + \frac{π}{4} erfi (- 3)

= \frac{1}{2} x e^{x^{2}} - \frac{π}{4} erfi (x) + \frac{3 e ^{9}}{2} + \frac{π}{4} erfi (- 3)

Vereinfache

= \frac{x e ^{x^{2}} + 3 e ^{9}}{2} - \frac{π}{4} erfi (x) + \frac{π}{4} erfi (- 3)

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