$\"\"$

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The function is $\"\"$ .

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Show that for each $\"\"$ , there exists a $\"\"$ , Such that $\"\"$ whenever $\"\"$ .

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To establish a connection between $\"\"$ and $\"\"$ .

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Consider $\"\"$ and simplify the inequality, then calculate for $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Subtract $\"\"$ from each side.

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$\"\"$

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$\"\"$

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Select the value of $\"\"$ such that it is closer to $\"\"$ .

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Consider $\"\"$ .

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$\"\"$

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For a given $\"\"$ you can choose $\"\"$ .

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$\"\"$ .

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Since $\"\"$ then from above $\"\"$ .

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$\"\"$

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$\"\"$ .