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

Lösung

\int \frac{x}{- x ^{2} + 4 x + 4} d x

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

Schritte zur Lösung

\int \frac{x}{- x ^{2} + 4 x + 4} d x

Vervollständige das Quadrat

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

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

Wende U-Substitution an

= \int \frac{u + 2}{- u ^{2} + 8} d u

Trigonometrische Substitution anwenden

= \int 22 sin (v) + 2 d v

Wende die Summenregel an:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int 22 sin (v) d v + \int 2 d v

\int 22 sin (v) d v = - 22 cos (v)

\int 2 d v = 2 v

= - 22 cos (v) + 2 v

Ersetze zurück

= - 22 cos (arcsin (\frac{1}{2 2} (x - 2))) + 2 arcsin (\frac{1}{2 2} (x - 2))

Vereinfache

- 22 cos (arcsin (\frac{1}{2 2} (x - 2))) + 2 arcsin (\frac{1}{2 2} (x - 2)) : - - x^{2} + 4 x + 4 + 2 arcsin (\frac{1}{2 2} x - \frac{1}{2})

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

Füge eine Konstante zur Lösung hinzu

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

x \to \infty lim (\frac{4 ^{x + 1} + 2 ^{x}}{4 ^{x}})

\frac{d}{d x} (- 7 ln (5 x^{2} - 11))

\int 1 0^{x^{2}} x d x

x \to - \infty lim (x^{3} e^{x})

x \to - 2 - lim (f (x) x)