integral from 1 to 2 of 2xsqrt(x^2+1)

Lösung

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

\frac{2 ( 5 5 - 2 2 )}{3}

Dezimale

5.56794 \dots

Schritte zur Lösung

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

Entferne die Konstante:

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

= 2 \cdot \int_{1}^{2} x x^{2} + 1 d x

Wende U-Substitution an

= 2 \cdot \int_{2}^{5} u^{2} d u

Wende die Potenzregel an

= 2 [\frac{u ^{3}}{3}]_{2}^{5}

Berechne die Grenzen:

\frac{5 5 - 2 2}{3}

= 2 \cdot \frac{5 5 - 2 2}{3}

Vereinfache

= \frac{2 ( 5 5 - 2 2 )}{3}

n = 3 \sum \infty \frac{1}{3 ^{n}}

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