integral of ((5x+3))/((x^3-2x^2-3x))

Lösung

\int \frac{( 5 x + 3 )}{( x ^{3} - 2 x ^{2} - 3 x )} d x

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

Schritte zur Lösung

\int \frac{5 x + 3}{x ^{3} - 2 x ^{2} - 3 x} d x

Ermittle den Partialbruch von

\frac{5 x + 3}{x ^{3} - 2 x ^{2} - 3 x} : - \frac{1}{x} - \frac{1}{2 ( x + 1 )} + \frac{3}{2 ( x - 3 )}

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

\int \frac{1}{x} d x = ln ∣ x ∣

\int \frac{1}{2 ( x + 1 )} d x = \frac{1}{2} ln ∣ x + 1 ∣

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

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

Füge eine Konstante zur Lösung hinzu

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

t an g e n t x^{2} + y^{2} = 169, (- 5, 12)

l a pl a ce t r an s f or m 1 - 2 t

x \to \infty lim (π x)

d er i v a t i v e 7 t + 2 t^{7}

\frac{d}{d x} (x f (x) + f (x) (c x) + c f (x))