Prove the following formula for the derivative of hyperbolic cosine,

*Proof.* We can compute from the definition of hyperbolic cosine in terms of exponentials,

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Stumbling Robot

A Fraction of a Dot
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Prove that the derivative of *cosh x* is *sinh x*

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### Point out an error, ask a question, offer an alternative solution (to use Latex type [latexpage] at the top of your comment):

Prove the following formula for the derivative of hyperbolic cosine,

*Proof.* We can compute from the definition of hyperbolic cosine in terms of exponentials,

Would the derivative of sinhx also be coshx?