$\"\"$

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The equations are $\"\"$ , $\"\"$ and $\"\"$ .

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(a)

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Graph the equations $\"\"$ , $\"\"$ and $\"\"$ . $\"\"$

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Observe the graph:

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The equation $\"\"$ is upper curve and $\"\"$ is lower curve.

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The two curves are intersected at $\"\"$ and $\"\"$ .

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Therefore, the region bounded between $\"\"$ to $\"\"$ .

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$\"\"$

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(b)

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$\"\"$ on interval $\"\"$ .

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The area between two curves is $\"\"$ .

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Consider $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Apply derivative on each side with respect to $\"\"$ .

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$\"\"$

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$\"\"$ .

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Substitute $\"\"$ , $\"\"$ and $\"\"$ .

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$\"\"$

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When $\"\"$ , $\"\"$ .

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When $\"\"$ , $\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ .

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$\"\"$ .

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When $\"\"$ , $\"\"$ .

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When $\"\"$ , $\"\"$ .

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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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$\"\"$

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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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Apply formula: $\"\"$ .

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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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$\"\"$

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(c)

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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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The area bounded between two curves is $\"\"$ .

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$\"\"$

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(a)

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Graph of the functions $\"\"$ and $\"\"$ .

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$\"\"$

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(b) The area bounded between two curves is $\"\"$ .

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(c) $\"\"$ .