Method on @infsup: cosh (X) ¶

Compute the hyperbolic cosine.

Accuracy: The result is a tight enclosure.

cosh (infsup (1))
  ⇒ ans ⊂ [1.543, 1.5431]

See also: @@infsup/acosh, @@infsup/sech, @@infsup/sinh, @@infsup/tanh.

Package: interval