integral of cos^5(x)sin^2(x)

Lösung

\int cos^{5} (x) sin^{2} (x) d x

\frac{sin ^{3} ( x )}{3} - \frac{2 sin ^{5} ( x )}{5} + \frac{sin ^{7} ( x )}{7} + C

Schritte zur Lösung

\int cos^{5} (x) sin^{2} (x) d x

Umschreiben mit Hilfe von Trigonometrie-Identitäten

= \int (1 - sin^{2} (x))^{2} cos (x) sin^{2} (x) d x

Wende U-Substitution an

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

Multipliziere aus

u^{2} (1 - u^{2})^{2} : u^{2} - 2 u^{4} + u^{6}

= \int u^{2} - 2 u^{4} + u^{6} 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 2 u^{4} d u + \int u^{6} d u

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

\int 2 u^{4} d u = \frac{2 u ^{5}}{5}

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

= \frac{u ^{3}}{3} - \frac{2 u ^{5}}{5} + \frac{u ^{7}}{7}

Setze in

u = sin (x)

ein

= \frac{sin ^{3} ( x )}{3} - \frac{2 sin ^{5} ( x )}{5} + \frac{sin ^{7} ( x )}{7}

Füge eine Konstante zur Lösung hinzu

= \frac{sin ^{3} ( x )}{3} - \frac{2 sin ^{5} ( x )}{5} + \frac{sin ^{7} ( x )}{7} + C

t an g e n t 2 y^{3} + x y - y = 250 x^{4}, (1, 5)

\frac{d}{d x} ((1 - cos (x))^{2})

\int 5 x ln (x^{6}) d x

x \to 1 lim (3 x^{3} - 2 x^{2} + 4)

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