TANH function
    TANH(Number) TANH(Number)
  
  Number
        Number or { Number }
      
      The input number.
Returns
        Number or { Number }
      
      The hyperbolic tangent.
Returns the hyperbolic tangent of a number.
Example
      TANH(0.5)TANH(0,5)
      
    
    Returns roughly 0.4621.