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Beliebt Rechnen >

integral of (8x^2+3x-6)/((x^2-4)(x+2))

Lösung

\int \frac{8 x ^{2} + 3 x - 6}{( x ^{2} - 4 ) ( x + 2 )} d x

Lösung

6 ln ∣ x + 2 ∣ + \frac{5}{x + 2} + 2 ln ∣ x - 2 ∣ + C

Schritte zur Lösung

\int \frac{8 x ^{2} + 3 x - 6}{( x ^{2} - 4 ) ( x + 2 )} d x

Ermittle den Partialbruch von

\frac{8 x ^{2} + 3 x - 6}{( x ^{2} - 4 ) ( x + 2 )} : \frac{6}{x + 2} - \frac{5}{( x + 2 ) ^{2}} + \frac{2}{x - 2}

= \int \frac{6}{x + 2} - \frac{5}{( x + 2 ) ^{2}} + \frac{2}{x - 2} 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 \frac{6}{x + 2} d x - \int \frac{5}{( x + 2 ) ^{2}} d x + \int \frac{2}{x - 2} d x

\int \frac{6}{x + 2} d x = 6 ln ∣ x + 2 ∣

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

\int \frac{2}{x - 2} d x = 2 ln ∣ x - 2 ∣

= 6 ln ∣ x + 2 ∣ - (- \frac{5}{x + 2}) + 2 ln ∣ x - 2 ∣

Vereinfache

= 6 ln ∣ x + 2 ∣ + \frac{5}{x + 2} + 2 ln ∣ x - 2 ∣

Füge eine Konstante zur Lösung hinzu

= 6 ln ∣ x + 2 ∣ + \frac{5}{x + 2} + 2 ln ∣ x - 2 ∣ + C

Graph

Beliebte Beispiele

tangent 2/(sqrt(x))-3e^x+3e^4

t an g e n t \frac{2}{x} - 3 e^{x} + 3 e^{4}

derivative 75(1-5/x)

d er i v a t i v e 75 (1 - \frac{5}{x})

sum from n=1 to infinity of (2/5)^{n-1}

n = 1 \sum \infty (\frac{2}{5})^{n - 1}

limit as t approaches infinity of t^4

t \to \infty lim (t^{4})

derivative f(x)=x^6(6x^3+x)^5

d er i v a t i v e f (x) = x^{6} (6 x^{3} + x)^{5}