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Beliebt Rechnen >

integral of x/(sqrt(2x-6))

Lösung

\int \frac{x}{2 x - 6} d x

Lösung

\frac{1}{3} (x + 6) 2 x - 6 + C

Schritte zur Lösung

\int \frac{x}{2 x - 6} d x

Wende U-Substitution an

= \int \frac{u ^{2} + 6}{2} d u

Entferne die Konstante:

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

= \frac{1}{2} \cdot \int u^{2} + 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

= \frac{1}{2} (\int u^{2} d u + \int 6 d u)

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

\int 6 d u = 6 u

= \frac{1}{2} (\frac{u ^{3}}{3} + 6 u)

Setze in

u = 2 x - 6

ein

= \frac{1}{2} (\frac{( 2 x - 6 ) ^{3}}{3} + 6 2 x - 6)

Vereinfache

\frac{1}{2} (\frac{( 2 x - 6 ) ^{3}}{3} + 6 2 x - 6) : \frac{1}{3} (x + 6) 2 x - 6

= \frac{1}{3} (x + 6) 2 x - 6

Füge eine Konstante zur Lösung hinzu

= \frac{1}{3} (x + 6) 2 x - 6 + C

Graph

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