alleryWhich font style does the ISO standard require for variables?
AItalic type
BBold upright type
CUnderlined type
DSmall capitals
Answer & Solution
Correct answer: A. Italic type
1. The standard requires italic fonts for variables, as in E = mc2.
2. Roman upright fonts are kept for things like standard functions.
3. Underlining and small capitals are not prescribed for variables.
_Source: Wikipedia, Mathematical notation, International standard mathematical notation_
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