integral from 2 to 4 of-x^3+7x^2-14x+8

Lösung

\int_{2}^{4} - x^{3} + 7 x^{2} - 14 x + 8 d x

\frac{8}{3}

Dezimale

2.66666 \dots

Schritte zur Lösung

\int_{2}^{4} - x^{3} + 7 x^{2} - 14 x + 8 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_{2}^{4} x^{3} d x + \int_{2}^{4} 7 x^{2} d x - \int_{2}^{4} 14 x d x + \int_{2}^{4} 8 d x

\int_{2}^{4} x^{3} d x = 60

\int_{2}^{4} 7 x^{2} d x = \frac{392}{3}

\int_{2}^{4} 14 x d x = 84

\int_{2}^{4} 8 d x = 16

= - 60 + \frac{392}{3} - 84 + 16

Vereinfache

- 60 + \frac{392}{3} - 84 + 16 : \frac{8}{3}

= \frac{8}{3}

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