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Beliebt Rechnen >

integral of (x^3+1)/5 (x^3-3x^2+5)

Lösung

\int \frac{x ^{3} + 1}{5} (x^{3} - 3 x^{2} + 5) d x

Lösung

\frac{1}{70} (2 x^{7} - 7 x^{6} + 21 x^{4} - 14 x^{3} + 70 x) + C

Schritte zur Lösung

\int \frac{x ^{3} + 1}{5} (x^{3} - 3 x^{2} + 5) d x

Entferne die Konstante:

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

= \frac{1}{5} \cdot \int (x^{3} + 1) (x^{3} - 3 x^{2} + 5) d x

Multipliziere aus

(x^{3} + 1) (x^{3} - 3 x^{2} + 5) : x^{6} - 3 x^{5} + 6 x^{3} - 3 x^{2} + 5

= \frac{1}{5} \cdot \int x^{6} - 3 x^{5} + 6 x^{3} - 3 x^{2} + 5 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

= \frac{1}{5} (\int x^{6} d x - \int 3 x^{5} d x + \int 6 x^{3} d x - \int 3 x^{2} d x + \int 5 d x)

\int x^{6} d x = \frac{x ^{7}}{7}

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

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

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

\int 5 d x = 5 x

= \frac{1}{5} (\frac{x ^{7}}{7} - \frac{x ^{6}}{2} + \frac{3 x ^{4}}{2} - x^{3} + 5 x)

Vereinfache

\frac{1}{5} (\frac{x ^{7}}{7} - \frac{x ^{6}}{2} + \frac{3 x ^{4}}{2} - x^{3} + 5 x) : \frac{1}{70} (2 x^{7} - 7 x^{6} + 21 x^{4} - 14 x^{3} + 70 x)

= \frac{1}{70} (2 x^{7} - 7 x^{6} + 21 x^{4} - 14 x^{3} + 70 x)

Füge eine Konstante zur Lösung hinzu

= \frac{1}{70} (2 x^{7} - 7 x^{6} + 21 x^{4} - 14 x^{3} + 70 x) + C

Graph

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