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

Lösung

\int \frac{x + 1}{x ( x - 2 ) ( x + 3 )} d x

- \frac{1}{6} ln ∣ x ∣ + \frac{3}{10} ln ∣ x - 2 ∣ - \frac{2}{15} ln ∣ x + 3 ∣ + C

Schritte zur Lösung

\int \frac{x + 1}{x ( x - 2 ) ( x + 3 )} d x

Ermittle den Partialbruch von

\frac{x + 1}{x ( x - 2 ) ( x + 3 )} : - \frac{1}{6 x} + \frac{3}{10 ( x - 2 )} - \frac{2}{15 ( x + 3 )}

= \int - \frac{1}{6 x} + \frac{3}{10 ( x - 2 )} - \frac{2}{15 ( 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 \frac{1}{6 x} d x + \int \frac{3}{10 ( x - 2 )} d x - \int \frac{2}{15 ( x + 3 )} d x

\int \frac{1}{6 x} d x = \frac{1}{6} ln ∣ x ∣

\int \frac{3}{10 ( x - 2 )} d x = \frac{3}{10} ln ∣ x - 2 ∣

\int \frac{2}{15 ( x + 3 )} d x = \frac{2}{15} ln ∣ x + 3 ∣

= - \frac{1}{6} ln ∣ x ∣ + \frac{3}{10} ln ∣ x - 2 ∣ - \frac{2}{15} ln ∣ x + 3 ∣

Füge eine Konstante zur Lösung hinzu

= - \frac{1}{6} ln ∣ x ∣ + \frac{3}{10} ln ∣ x - 2 ∣ - \frac{2}{15} ln ∣ x + 3 ∣ + C

d er i v a t i v e 6 x (x^{2} - 1)^{2}

\int x^{3} 0. 2^{- x} x d x

x \to + (- 2) lim (\frac{8}{x})

t a y l or 9 x ln (1 + 2 x)

\frac{d}{d x} (ln (x + y^{2}))