coth -- hyperbolic cotangent

• Usage:

  coth x

  coth I

• Inputs:
  • x
  • I, a real interval
• Outputs:
  • a real number, the hyperbolic cotangent of x
  • a real interval, an interval containing the hyperbolic cotangents of the points of I

i1 : coth(pi/3)

o1 = 1.280878071045045

o1 : RR (of precision 53)