This is an introduction to the hyperbolic functions. Since hyperbolic functions have equivalent properties to trigonometric functions, you will see the words sin, cos, tan, and NumPy also provides functions for inverse hyperbolic functions. To use it, simply drop the value into the parameter.
Note:
sinh x = 
-e^(-x)/2
cosh x = +e^(-x)/2
tanh x = sinhx/coshx
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