Name:
acosh
the arg-hyperbolic cosine function.
Library names:
sollya_obj_t sollya_lib_acosh(sollya_obj_t)
sollya_obj_t sollya_lib_build_function_acosh(sollya_obj_t)
#define SOLLYA_ACOSH(x) sollya_lib_build_function_acosh(x)
Description:
- acosh is the inverse of the function cosh: acosh(y) is the unique number
x in [0; +Inf] such that cosh(x)=y.
- It is defined only for y in [0; +Inf].
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