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Beliebt Rechnen >

integral of (2x-1)sqrt(x+3)

Lösung

\int (2 x - 1) x + 3 d x

Lösung

\frac{4}{5} (x + 3)^{\frac{5}{2}} - \frac{14}{3} (x + 3)^{\frac{3}{2}} + C

Schritte zur Lösung

\int (2 x - 1) x + 3 d x

Multipliziere aus

(2 x - 1) x + 3 : 2 x x + 3 - x + 3

= \int 2 x x + 3 - x + 3 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

= \int 2 x x + 3 d x - \int x + 3 d x

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

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

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

Vereinfache

2 (\frac{2}{5} (x + 3)^{\frac{5}{2}} - 2 (x + 3)^{\frac{3}{2}}) - \frac{2}{3} (x + 3)^{\frac{3}{2}} : \frac{4}{5} (x + 3)^{\frac{5}{2}} - \frac{14}{3} (x + 3)^{\frac{3}{2}}

= \frac{4}{5} (x + 3)^{\frac{5}{2}} - \frac{14}{3} (x + 3)^{\frac{3}{2}}

Füge eine Konstante zur Lösung hinzu

= \frac{4}{5} (x + 3)^{\frac{5}{2}} - \frac{14}{3} (x + 3)^{\frac{3}{2}} + C

Graph

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