integral from 0 to 3 of x/(sqrt(16+3x))

Lösung

\int_{0}^{3} \frac{x}{16 + 3 x} d x

\frac{26}{27}

Dezimale

0.96296 \dots

Schritte zur Lösung

\int_{0}^{3} \frac{x}{16 + 3 x} d x

Wende U-Substitution an

= \int_{4}^{5} \frac{2 ( u ^{2} - 16 )}{9} d u

Entferne die Konstante:

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

= \frac{2}{9} \cdot \int_{4}^{5} u^{2} - 16 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

= \frac{2}{9} (\int_{4}^{5} u^{2} d u - \int_{4}^{5} 16 d u)

\int_{4}^{5} u^{2} d u = \frac{61}{3}

\int_{4}^{5} 16 d u = 16

= \frac{2}{9} (\frac{61}{3} - 16)

Vereinfache

\frac{2}{9} (\frac{61}{3} - 16) : \frac{26}{27}

= \frac{26}{27}

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