integral of x^2y^3-1/(1+9x^2)

Lösung

\int x^{2} y^{3} - \frac{1}{1 + 9 x ^{2}} d x

- \frac{1}{3} arctan (3 x) + \frac{y ^{3} x ^{3}}{3} + C

Schritte zur Lösung

\int x^{2} y^{3} - \frac{1}{1 + 9 x ^{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}{1 + 9 x ^{2}} d x + \int y^{3} x^{2} d x

\int \frac{1}{1 + 9 x ^{2}} d x = \frac{1}{3} arctan (3 x)

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

= - \frac{1}{3} arctan (3 x) + \frac{y ^{3} x ^{3}}{3}

Füge eine Konstante zur Lösung hinzu

= - \frac{1}{3} arctan (3 x) + \frac{y ^{3} x ^{3}}{3} + C

\int (csc (x) + cot (x))^{2} d x

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