integral from 0 to 2 of (2v)/(sqrt(v+1))

Lösung

\int_{0}^{2} \frac{2 v}{v + 1} d v

\frac{8}{3}

Dezimale

2.66666 \dots

Schritte zur Lösung

\int_{0}^{2} \frac{2 v}{v + 1} d v

Entferne die Konstante:

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

= 2 \cdot \int_{0}^{2} \frac{v}{v + 1} d v

Wende U-Substitution an

= 2 \cdot \int_{1}^{3} 2 (u^{2} - 1) d u

Entferne die Konstante:

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

= 2 \cdot 2 \cdot \int_{1}^{3} u^{2} - 1 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

= 2 \cdot 2 (\int_{1}^{3} u^{2} d u - \int_{1}^{3} 1 d u)

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

\int_{1}^{3} 1 d u = 3 - 1

= 2 \cdot 2 (3 - \frac{1}{3} - (3 - 1))

Vereinfache

2 \cdot 2 (3 - \frac{1}{3} - (3 - 1)) : \frac{8}{3}

= \frac{8}{3}

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