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Beliebt Rechnen >

integral of 3x^2(x^3+7)^3

Lösung

\int 3 x^{2} (x^{3} + 7)^{3} d x

Lösung

\frac{x ^{12}}{4} + 7 x^{9} + \frac{147 x ^{6}}{2} + 343 x^{3} + C

Schritte zur Lösung

\int 3 x^{2} (x^{3} + 7)^{3} d x

Entferne die Konstante:

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

= 3 \cdot \int x^{2} (x^{3} + 7)^{3} d x

Multipliziere aus

x^{2} (x^{3} + 7)^{3} : x^{11} + 21 x^{8} + 147 x^{5} + 343 x^{2}

= 3 \cdot \int x^{11} + 21 x^{8} + 147 x^{5} + 343 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^{11} d x + \int 21 x^{8} d x + \int 147 x^{5} d x + \int 343 x^{2} d x)

\int x^{11} d x = \frac{x ^{12}}{12}

\int 21 x^{8} d x = \frac{7 x ^{9}}{3}

\int 147 x^{5} d x = \frac{49 x ^{6}}{2}

\int 343 x^{2} d x = \frac{343 x ^{3}}{3}

= 3 (\frac{x ^{12}}{12} + \frac{7 x ^{9}}{3} + \frac{49 x ^{6}}{2} + \frac{343 x ^{3}}{3})

Vereinfache

3 (\frac{x ^{12}}{12} + \frac{7 x ^{9}}{3} + \frac{49 x ^{6}}{2} + \frac{343 x ^{3}}{3}) : \frac{x ^{12}}{4} + 7 x^{9} + \frac{147 x ^{6}}{2} + 343 x^{3}

= \frac{x ^{12}}{4} + 7 x^{9} + \frac{147 x ^{6}}{2} + 343 x^{3}

Füge eine Konstante zur Lösung hinzu

= \frac{x ^{12}}{4} + 7 x^{9} + \frac{147 x ^{6}}{2} + 343 x^{3} + C

Graph

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