Translations:Faq/Math/106/2/en
in
is a keyword in Math, which is a set operation expecting two arguments on the both sides (before and after), so put in the formula as is, it shows you a question mark indicating missing argument.
in
is a keyword in Math, which is a set operation expecting two arguments on the both sides (before and after), so put in the formula as is, it shows you a question mark indicating missing argument.