$\"\"$

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The equation is $\"\"$ .

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Tangent line equation is $\"\"$ .

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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The point of tangency is $\"\"$ . $\"\"$

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The point of tangency is $\"\"$ .