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Beliebt Rechnen >

integral of (x^3+2)^2*3x^2

Lösung

\int (x^{3} + 2)^{2} \cdot 3 x^{2} d x

Lösung

\frac{x ^{9}}{3} + 2 x^{6} + 4 x^{3} + C

Schritte zur Lösung

\int (x^{3} + 2)^{2} \cdot 3 x^{2} d x

Entferne die Konstante:

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

= 3 \cdot \int (x^{3} + 2)^{2} x^{2} d x

Multipliziere aus

(x^{3} + 2)^{2} x^{2} : x^{8} + 4 x^{5} + 4 x^{2}

= 3 \cdot \int x^{8} + 4 x^{5} + 4 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

= 3 (\int x^{8} d x + \int 4 x^{5} d x + \int 4 x^{2} d x)

\int x^{8} d x = \frac{x ^{9}}{9}

\int 4 x^{5} d x = \frac{2 x ^{6}}{3}

\int 4 x^{2} d x = \frac{4 x ^{3}}{3}

= 3 (\frac{x ^{9}}{9} + \frac{2 x ^{6}}{3} + \frac{4 x ^{3}}{3})

Vereinfache

3 (\frac{x ^{9}}{9} + \frac{2 x ^{6}}{3} + \frac{4 x ^{3}}{3}) : \frac{x ^{9}}{3} + 2 x^{6} + 4 x^{3}

= \frac{x ^{9}}{3} + 2 x^{6} + 4 x^{3}

Füge eine Konstante zur Lösung hinzu

= \frac{x ^{9}}{3} + 2 x^{6} + 4 x^{3} + C

Graph

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