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The function is $\"\"$ .

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Find $\"\"$ .

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Consider $\"\"$ .

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

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Find $\"\"$ .

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

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$\"\"$ .

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Find $\"\"$ .

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

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$\"\"$ .

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Find $\"\"$ .

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

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Find $\"\"$ .

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$\"\"$

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Multiply each side by "negative one".

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Find $\"\"$ .

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

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$\"\"$ .

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Find $\"\"$ .

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

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$\"\"$ .

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Find $\"\"$ .

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

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$\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .

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$\"\"$ $\"\"$ .