$\"\"$

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The function is $\"\"$ .

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The domain of $\"\"$ consists of all $\"\"$ for which $\"\"$ .

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$\"\"$

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Solve the rational inequality $\"\"$ .

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Exclude the value of inequality is $\"\"$ .

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Solve the related equation $\"\"$

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$\"\"$

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Excluded value and solution of inequality divide the $\"\"$ - axis into three intervals $\"\"$ , $\"\"$ , $\"\"$ .

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$\"\"$

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Now test the sample values in each interval to determine whether values in the interval satisfy the inequality.

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Test interval $\"\"$

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At $\"\"$ ,

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$\"\"$

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The above statement is true.

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Test interval $\"\"$

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At $\"\"$ ,

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$\"\"$

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The above statement is false.

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Test interval $\"\"$

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At $\"\"$ ,

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$\"\"$ .

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The above statement is true.

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The above conclude that solution of the inequality are $\"\"$ or $\"\"$ .

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The domain of $\"\"$ is $\"\"$ .

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The solution of $\"\"$ is $\"\"$ .

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$\"\"$

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The domain of $\"\"$ is $\"\"$ .