Chapter 8.2, Problem 98E

(a)

To determine

To calculate: The area bounded by the graphs of $y=x\sin x$ and $y=0$ over the interval $\left[0,\pi \right]$.

(b)

To determine

To calculate: The area bounded by the graphs of $y=x\sin x$ and $y=0$ over the interval $\left[\pi ,2\pi \right]$.

(c)

To determine

To calculate: The area bounded by the graphs of $y=x\sin x$ and $y=0$ over the interval $\left[2\pi ,3\pi \right]$.