TI-BASIC:Arcosh
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Command Summary
Calculates the inverse hyperbolic cosine of a value.
Command Syntax
coshֿ¹(value)
Menu Location
The coshֿ¹( command can only be found in the catalog. Press:
- 2nd CATALOG to access the command catalog.
- C to skip to commands starting with C.
- Scroll down and select coshֿ¹(
TI-83/84/+/SE
1 byte
The coshֿ¹( function gives the inverse hyperbolic cosine of a value. coshֿ¹(x) is the number y such that x = cosh(y).
Although coshֿ¹(x) can be defined for all real and complex numbers, it assumes real values only for x≥1. Since hyperbolic functions in the Z80 calculators are restricted only to real values, ERR:DOMAIN is thrown when x<1.
The coshֿ¹( command also works for lists.
coshֿ¹(1)
0
coshֿ¹({2,3})
{1.316957897 1.762747174}
Error Conditions
- ERR:DOMAIN when taking the inverse cosh of a number less than 1.
