integral of (3+5x-6x^2-7x^3)/(2x^2)

Lösung

\int \frac{3 + 5 x - 6 x ^{2} - 7 x ^{3}}{2 x ^{2}} d x

\frac{1}{2} (- \frac{3}{x} + 5 ln ∣ x ∣ - 6 x - \frac{7 x ^{2}}{2}) + C

Schritte zur Lösung

\int \frac{3 + 5 x - 6 x ^{2} - 7 x ^{3}}{2 x ^{2}} d x

Entferne die Konstante:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= \frac{1}{2} \cdot \int \frac{3 + 5 x - 6 x ^{2} - 7 x ^{3}}{x ^{2}} d x

Multipliziere aus

\frac{3 + 5 x - 6 x ^{2} - 7 x ^{3}}{x ^{2}} : \frac{3}{x ^{2}} + \frac{5}{x} - 6 - 7 x

= \frac{1}{2} \cdot \int \frac{3}{x ^{2}} + \frac{5}{x} - 6 - 7 x 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

= \frac{1}{2} (\int \frac{3}{x ^{2}} d x + \int \frac{5}{x} d x - \int 6 d x - \int 7 x d x)

\int \frac{3}{x ^{2}} d x = - \frac{3}{x}

\int \frac{5}{x} d x = 5 ln ∣ x ∣

\int 6 d x = 6 x

\int 7 x d x = \frac{7 x ^{2}}{2}

= \frac{1}{2} (- \frac{3}{x} + 5 ln ∣ x ∣ - 6 x - \frac{7 x ^{2}}{2})

Füge eine Konstante zur Lösung hinzu

= \frac{1}{2} (- \frac{3}{x} + 5 ln ∣ x ∣ - 6 x - \frac{7 x ^{2}}{2}) + C

\int \frac{t}{t ^{4} + 7} d t

s l o p e (8 - 1) (82)

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