csch -- hyperbolic cosecant

• Usage:

  csch x

  csch I

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

i1 : csch(pi/3)

o1 = .8004052928885931

o1 : RR (of precision 53)