Plot of the two basic <a href="https://en.wikipedia.org/wiki/Hyperbolic_function" class="extiw" title="w:Hyperbolic function">Hyperbolic functions</a>: hyperbolic sine (<a href="//commons.wikimedia.org/wiki/File:Hyperbolic_Sine.svg" title="File:Hyperbolic Sine.svg">sinh</a>) and hyperbolic cosine (<a href="//commons.wikimedia.org/wiki/File:Hyperbolic_Cosine.svg" title="File:Hyperbolic Cosine.svg">cosh</a>). Sinh is red and cosh is blue.
<a href="//commons.wikimedia.org/wiki/User:Geek3" title="User:Geek3">Geek3</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>