Method on @infsup: coth (X) ¶

Compute the hyperbolic cotangent, that is the reciprocal hyperbolic tangent.

Accuracy: The result is a tight enclosure.

coth (infsup (1))
  ⇒ ans ⊂ [1.313, 1.3131]

See also: @@infsup/tanh, @@infsup/csch, @@infsup/sech.

Package: interval