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Beliebt Rechnen >

fläche x=y^2,x=y+6

Lösung

fläche

x = y^{2}, x = y + 6

Lösung

\frac{125}{6}

+1

Dezimale

20.83333 \dots

Schritte zur Lösung

Stelle

y

nach

x = y^{2}

um:

y = x, y = - x

Stelle

y

nach

x = y + 6

um:

y = x - 6

f_{1} (x) = x

f_{2} (x) = - x

Um die Schnittpunkte zu finden, löse

f_{i} (x) = f_{j} (x)

x = - x : x = 0

x = x - 6 : x = 9

- x = x - 6 : x = 4

= \int_{0}^{4} ∣ f_{1} (x) - f_{2} (x) ∣ d x + \int_{4}^{9} ∣ f_{1} (x) - f_{3} (x) ∣ d x

= \int_{0}^{4} x - (- x) d x + \int_{4}^{9} x - (x - 6) d x

\int_{0}^{4} x - (- x) d x = \frac{32}{3}

\int_{4}^{9} x - (x - 6) d x = \frac{61}{6}

= \frac{32}{3} + \frac{61}{6}

Vereinfache

= \frac{125}{6}

Graph

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