Step 1:

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The hyperbolic trigonometric function is $\"\"$ .

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Hyperbolic sine function is defined as $\"\"$

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Hyperbolic cosine function is defined as $\"\"$

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Therefore, $\"\"$

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$\"\"$

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Multiply the numerator and denominator by $\"\"$ .

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$\"\"$

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$\"\"$

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Solution:

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$\"\"$