integral of (x+2)/((x^2+4x)^2)

Lösung

\int \frac{x + 2}{( x ^{2} + 4 x ) ^{2}} d x

- \frac{1}{8 x} + \frac{1}{8 ( x + 4 )} + C

Schritte zur Lösung

\int \frac{x + 2}{( x ^{2} + 4 x ) ^{2}} d x

Ermittle den Partialbruch von

\frac{x + 2}{( x ^{2} + 4 x ) ^{2}} : \frac{1}{8 x ^{2}} - \frac{1}{8 ( x + 4 ) ^{2}}

= \int \frac{1}{8 x ^{2}} - \frac{1}{8 ( x + 4 ) ^{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{1}{8 x ^{2}} d x - \int \frac{1}{8 ( x + 4 ) ^{2}} d x

\int \frac{1}{8 x ^{2}} d x = - \frac{1}{8 x}

\int \frac{1}{8 ( x + 4 ) ^{2}} d x = - \frac{1}{8 ( x + 4 )}

= - \frac{1}{8 x} - (- \frac{1}{8 ( x + 4 )})

Vereinfache

= - \frac{1}{8 x} + \frac{1}{8 ( x + 4 )}

Füge eine Konstante zur Lösung hinzu

= - \frac{1}{8 x} + \frac{1}{8 ( x + 4 )} + C

t an g e n t 9 - 4 x, at x = - 1

\int_{1}^{4} - 4 e^{x} d x

d er i v a t i v e f (x) = (x - 2) (x - 1) (x + 1) (x + 2)

\frac{d}{d x} (x^{4} + \frac{1}{x ^{4}})

d er i v a t i v e \frac{s - 4}{s + 2}