integral of (x^3-1)/(x^2-4)

Lösung

\int \frac{x ^{3} - 1}{x ^{2} - 4} d x

\frac{1}{2} (x^{2} - 4 + 4 ln x^{2} - 4) + \frac{1}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1) + C

Schritte zur Lösung

\int \frac{x ^{3} - 1}{x ^{2} - 4} d x

Multipliziere aus

\frac{x ^{3} - 1}{x ^{2} - 4} : \frac{x ^{3}}{x ^{2} - 4} - \frac{1}{x ^{2} - 4}

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{x ^{3}}{x ^{2} - 4} d x - \int \frac{1}{x ^{2} - 4} d x

\int \frac{x ^{3}}{x ^{2} - 4} d x = \frac{1}{2} (x^{2} - 4 + 4 ln x^{2} - 4)

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

= \frac{1}{2} (x^{2} - 4 + 4 ln x^{2} - 4) - (- \frac{1}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1))

Vereinfache

= \frac{1}{2} (x^{2} - 4 + 4 ln x^{2} - 4) + \frac{1}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1)

Füge eine Konstante zur Lösung hinzu

= \frac{1}{2} (x^{2} - 4 + 4 ln x^{2} - 4) + \frac{1}{4} (ln \frac{x}{2} + 1 - ln \frac{x}{2} - 1) + C

\int 14 sin^{2} (x co) s^{2} x d x

s l o p e (64, 56), (28, 33)

x \to 0 - lim (\frac{1}{x ^{2} + 6 x})

d er i v a t i v e y = e^{x} (x^{2} - 4)

\int y 10 + 8 y - 16 y^{2} d y