integral from 0 to 1 of x^2sqrt(1+x)

Lösung

\int_{0}^{1} x^{2} 1 + x d x

\frac{44 2 - 16}{105}

Dezimale

0.44024 \dots

Schritte zur Lösung

\int_{0}^{1} x^{2} 1 + x d x

Wende U-Substitution an

= \int_{1}^{2} (u - 1)^{2} u d u

Multipliziere aus

(u - 1)^{2} u : u^{\frac{5}{2}} - 2 u^{\frac{3}{2}} + u

= \int_{1}^{2} u^{\frac{5}{2}} - 2 u^{\frac{3}{2}} + u d u

Wende die Summenregel an:

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

= \int_{1}^{2} u^{\frac{5}{2}} d u - \int_{1}^{2} 2 u^{\frac{3}{2}} d u + \int_{1}^{2} u d u

\int_{1}^{2} u^{\frac{5}{2}} d u = \frac{16 2 - 2}{7}

\int_{1}^{2} 2 u^{\frac{3}{2}} d u = \frac{2 ( 8 2 - 2 )}{5}

\int_{1}^{2} u d u = \frac{4 2 - 2}{3}

= \frac{16 2 - 2}{7} - \frac{2 ( 8 2 - 2 )}{5} + \frac{4 2 - 2}{3}

Vereinfache

\frac{16 2 - 2}{7} - \frac{2 ( 8 2 - 2 )}{5} + \frac{4 2 - 2}{3} : \frac{44 2 - 16}{105}

= \frac{44 2 - 16}{105}

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