integral from-1 to 1 of (x^2+2x)

Lösung

\int_{- 1}^{1} (x^{2} + 2 x) d x

\frac{2}{3}

Dezimale

0.66666 \dots

Schritte zur Lösung

\int_{- 1}^{1} x^{2} + 2 x d x

Wende die Summenregel an:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int_{- 1}^{1} x^{2} d x + \int_{- 1}^{1} 2 x d x

\int_{- 1}^{1} x^{2} d x = \frac{2}{3}

\int_{- 1}^{1} 2 x d x = 0

= \frac{2}{3} + 0

Vereinfache

= \frac{2}{3}

\int_{0}^{π} sin (2 x) sin (x) d x

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