Step 1 :

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Linear approximation is $\"\"$

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The function $\"\"$ and $\"\"$

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At $\"\"$ .

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$\"\"$

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Differentiate $\"\"$ with respect to x.

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$\"\"$

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Evaluate $\"\"$ :

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$\"\"$

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Evaluate $\"\"$ :

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$\"\"$

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Step 2 :

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Substitute $\"\"$ and $\"\"$ in $\"\"$

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$\"\"$

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Solution : $\"\"$