In Japan, it is occasionally said that x' should be read as eks-prime in mathematical contexts. However, there are several cases to read eks-dash. In addition, a person says that eks-dash was originally used in the UK and it has been changedas eks-prime in USA. Is this true?
In Japan, the ration to read eks-dash vs eks-parime is about 8:2. I know that "eks - dash" is not majority. But, I would like to ask as follows;
How this rate changes in another countries?