User:Hyp cos

I'm hyp cos, and ch(x)=(e^x+e^(-x))/2. If you hang a rope, it looks like the image of y=ch(x).

Have a look at my stuff  --

R function series: Basic R function... Brace notation... Linear array notation... Dimensional array notation... Nested array notation... Hyper nested array notation... (more coming soon!)

Mixed arrow notation:

Catching function: and its analysis...

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