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Beliebt Rechnen >

integral of tan^6(ax)

Lösung

\int tan^{6} (a x) d x

Lösung

\frac{1}{a} (\frac{tan ^{5} ( a x )}{5} - \frac{tan ^{3} ( a x )}{3} + tan (a x) - arctan (tan (a x))) + C

Schritte zur Lösung

\int tan^{6} (a x) d x

Wende U-Substitution an

= \int \frac{tan ^{6} ( u )}{a} d u

Entferne die Konstante:

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

= \frac{1}{a} \cdot \int tan^{6} (u) d u

Wende U-Substitution an

= \frac{1}{a} \cdot \int \frac{v ^{6}}{1 + v ^{2}} d v

Lange Division

\frac{v ^{6}}{1 + v ^{2}} : v^{4} - v^{2} + 1 - \frac{1}{v ^{2} + 1}

= \frac{1}{a} \cdot \int v^{4} - v^{2} + 1 - \frac{1}{v ^{2} + 1} d v

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}{a} (\int v^{4} d v - \int v^{2} d v + \int 1 d v - \int \frac{1}{v ^{2} + 1} d v)

\int v^{4} d v = \frac{v ^{5}}{5}

\int v^{2} d v = \frac{v ^{3}}{3}

\int 1 d v = v

\int \frac{1}{v ^{2} + 1} d v = arctan (v)

= \frac{1}{a} (\frac{v ^{5}}{5} - \frac{v ^{3}}{3} + v - arctan (v))

Ersetze zurück

= \frac{1}{a} (\frac{tan ^{5} ( a x )}{5} - \frac{tan ^{3} ( a x )}{3} + tan (a x) - arctan (tan (a x)))

Füge eine Konstante zur Lösung hinzu

= \frac{1}{a} (\frac{tan ^{5} ( a x )}{5} - \frac{tan ^{3} ( a x )}{3} + tan (a x) - arctan (tan (a x))) + C

Graph

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