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Beliebt Rechnen >

integral of sec^4(x)*tan^2(x)

Lösung

\int sec^{4} (x) \cdot tan^{2} (x) d x

Lösung

\frac{tan ^{3} ( x )}{3} + \frac{tan ^{5} ( x )}{5} + C

Schritte zur Lösung

\int sec^{4} (x) tan^{2} (x) d x

Umschreiben mit Hilfe von Trigonometrie-Identitäten

= \int (1 + tan^{2} (x)) sec^{2} (x) tan^{2} (x) d x

Wende U-Substitution an

= \int u^{2} (1 + u^{2}) d u

Multipliziere aus

u^{2} (1 + u^{2}) : u^{2} + u^{4}

= \int u^{2} + u^{4} d u

Wende die Summenregel an:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int u^{2} d u + \int u^{4} d u

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

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

= \frac{u ^{3}}{3} + \frac{u ^{5}}{5}

Setze in

u = tan (x)

ein

= \frac{tan ^{3} ( x )}{3} + \frac{tan ^{5} ( x )}{5}

Füge eine Konstante zur Lösung hinzu

= \frac{tan ^{3} ( x )}{3} + \frac{tan ^{5} ( x )}{5} + C

Graph

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