$\"\"$

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(a)

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The functions are $\"\"$ and $\"\"$ .

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The composition of f with g is $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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The composition of g with f is $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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Since $\"\"$ , the functions f and g are inverse. $\"\"$

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(b)

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The functions are $\"\"$ and $\"\"$ .

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$\"graph$

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The graphs are reflections of each other in the line y = x.

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The reflective property by testing a few points on each graph.

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If the point (a, b) is on the graph of f, then point (b, a) is lie on the graph of g.

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The points $\"\"$ are lie on the graph of f and those reflective points $\"\"$ are also lie on the graph of g.

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Since the graphs of f and g have reflective property, f and g are inverse by graphically. $\"\"$

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(a) The functions f and g are inverse.

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(b) The graph of the functions $\"\"$ and $\"\"$ is :

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$\"graph$