$\"\"$

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(a)

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Sketch the region $\"\"$ .

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Graph the function $\"\"$ on $\"\"$ .

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Shade the region.

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Graph:

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$\"\"$

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$\"\"$

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(b)

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Estimate the area $\"\"$ by using graph:

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$\"\"$

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Observe the graph:

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$\"\"$ .

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Area of the region is $\"\"$ .

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$\"\"$

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(c)

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Find the area analytically:

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Divide the rectangle into two regions.

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Area of the rectangle $\"\"$ , where $\"\"$ is breadth and $\"\"$ is height.

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Area of the rectangle $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Area is $\"\"$ .

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$\"\"$

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(a) Graph:

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$\"\"$

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(b) Area of the region is $\"\"$ .

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(c) Area is $\"\"$ .