Doppelintegral/Subgraph zu sinus/x/y/Aufgabe

Es sei ${}G$ der Subgraph der Sinusfunktion zwischen ${}0$ und ${}\pi$ . Berechne die Integrale

a) ${}\int _{G}x\,d\lambda ^{2}$ ,

b)

{}\int _{G}y\,d\lambda ^{2}

.

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