Fork me on GitHub
Math for the people, by the people.

User login

domain of arcosh

Primary tabs

domain of arcosh

Regarding arcosh, you have:

It is defined for $\vert x\vert \geqq 1$.

I am pretty sure that the absolute value bars are incorrect. (That is, it should read: "It is defined for $x \geqq 1$.") For example, if you plug in -1, you get arcosh(-1)=ln(-1). Also, for all real x, cosh(x) is at least 1, so it makes sense that its inverse is only defined for real numbers at least as large as 1.

Parting words from the person who closed the correction: 
You are right, thanks!
Status: Accepted
Reference to the user who closed the correction.: 
Reference to the article this correction is about: 
Status of the article (was it accepted?): 
1
Status of the article (is it closed?): 
1
What kind of correction is this: 
Meta

Subscribe to Comments for "domain of arcosh"