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

Lösung

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

- \frac{9}{2}

Dezimale

- 4.5

Schritte zur Lösung

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

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

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

\int_{- 1}^{2} 2 d x = 6

= 3 - \frac{3}{2} - 6

Vereinfache

3 - \frac{3}{2} - 6 : - \frac{9}{2}

= - \frac{9}{2}