Question
$1-6$ Find the numerical value of each expression.(a) $\cosh 3 \quad$ (b) $\cosh (\ln 3)$
Step 1
The hyperbolic cosine function is defined as $\cosh x = \frac{e^x + e^{-x}}{2}$. So, we substitute $x=3$ into this formula: \[\cosh 3 = \frac{e^3 + e^{-3}}{2}\] Show more…
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