$\"\"$

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Observe the graph.

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The first graph has a vertical asymptote at $\"\"$ , which means the rational function is undefined at $\"\"$ .

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(a)

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The partial fraction of decomposition rational expression is $\"\"$ .

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$\"\"$

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Rewrite the expression into partial fraction.

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$\"\"$ .

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The function is define at $\"\"$ .

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(b)

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The partial fraction of decomposition rational expression is $\"\"$ .

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$\"\"$

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Rewrite the expression into partial fraction.

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$\"\"$ .

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The function is undefine at $\"\"$ .

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$\"\"$

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(c)

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The partial fraction of decomposition rational expression is $\"\"$ .

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$\"\"$

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Rewrite the expression into partial fraction.

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$\"\"$ .

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The function is undefine at $\"\"$ .

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(d)

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The partial fraction of decomposition rational expression is $\"\"$ .

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$\"\"$

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Rewrite the expression into partial fraction.

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$\"\"$ .

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The function is define at $\"\"$ this shown second graph.

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$\"\"$

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The answer is shown $\"\"$ .