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Beliebt Rechnen >

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

Lösung

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

Lösung

3 + 1 + 2 x - 3 ln 3 + 1 + 2 x + C

Schritte zur Lösung

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

Wende U-Substitution an

= \int \frac{u - 3}{u} d u

Multipliziere aus

\frac{u - 3}{u} : 1 - \frac{3}{u}

= \int 1 - \frac{3}{u} 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 1 d u - \int \frac{3}{u} d u

\int 1 d u = u

\int \frac{3}{u} d u = 3 ln ∣ u ∣

= u - 3 ln ∣ u ∣

Setze in

u = 3 + 1 + 2 x

ein

= 3 + 1 + 2 x - 3 ln 3 + 1 + 2 x

Füge eine Konstante zur Lösung hinzu

= 3 + 1 + 2 x - 3 ln 3 + 1 + 2 x + C

Graph

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