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Beliebt Rechnen >

integral of (x^2)/(x-9)

Lösung

\int \frac{x ^{2}}{x - 9} d x

Lösung

\frac{( x - 9 ) ^{2}}{2} + 18 (x - 9) + 81 ln ∣ x - 9 ∣ + C

Schritte zur Lösung

\int \frac{x ^{2}}{x - 9} d x

Wende U-Substitution an

= \int \frac{( u + 9 ) ^{2}}{u} d u

Multipliziere aus

\frac{( u + 9 ) ^{2}}{u} : u + 18 + \frac{81}{u}

= \int u + 18 + \frac{81}{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 u d u + \int 18 d u + \int \frac{81}{u} d u

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

\int 18 d u = 18 u

\int \frac{81}{u} d u = 81 ln ∣ u ∣

= \frac{u ^{2}}{2} + 18 u + 81 ln ∣ u ∣

Setze in

u = x - 9

ein

= \frac{( x - 9 ) ^{2}}{2} + 18 (x - 9) + 81 ln ∣ x - 9 ∣

Füge eine Konstante zur Lösung hinzu

= \frac{( x - 9 ) ^{2}}{2} + 18 (x - 9) + 81 ln ∣ x - 9 ∣ + C

Graph

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