Hyperbolic functions: Difference between revisions

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Tag: Reverted
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===Sums of arguments===
<math display="block">\begin{align}
\sinhsin(x + y) &= \sinh x \cosh y + \cosh x \sinh y \\
\coshcos(x + y) &= \cosh x \cosh y + \sinh x \sinh y \\
\tanhtan(x + y) &= \frac{\tanh x +\tanh y}{1+ \tanh x \tanh y } \\
\end{align}</math>
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