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Beliebt Rechnen >

integral from 0 to 4/3 of pi(4-3x)^2

Lösung

\int_{0}^{\frac{4}{3}} π (4 - 3 x)^{2} d x

Lösung

\frac{64 π}{9}

+1

Dezimale

22.34021 \dots

Schritte zur Lösung

\int_{0}^{\frac{4}{3}} π (4 - 3 x)^{2} d x

Entferne die Konstante:

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

= π \cdot \int_{0}^{\frac{4}{3}} (4 - 3 x)^{2} d x

Wende U-Substitution an

= π \cdot \int_{4}^{0} - \frac{u ^{2}}{3} d u

\int_{a}^{b} f (x) d x = - \int_{b}^{a} f (x) d x, a < b

= π (- \int_{0}^{4} - \frac{u ^{2}}{3} d u)

Entferne die Konstante:

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

= π (- (- \frac{1}{3} \cdot \int_{0}^{4} u^{2} d u))

Wende die Potenzregel an

= π (- (- \frac{1}{3} [\frac{u ^{3}}{3}]_{0}^{4}))

Vereinfache

π (- (- \frac{1}{3} [\frac{u ^{3}}{3}]_{0}^{4})) : \frac{π}{3} [\frac{u ^{3}}{3}]_{0}^{4}

= \frac{π}{3} [\frac{u ^{3}}{3}]_{0}^{4}

Berechne die Grenzen:

\frac{64}{3}

= \frac{π}{3} \cdot \frac{64}{3}

Vereinfache

= \frac{64 π}{9}

Graph

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