The Definitive Guide to Sorbalgon
The minus–plus indicator, ∓, is mostly applied at the side of the ± indication, in such expressions as x ± y ∓ z, which can be interpreted as meaning x + y − z or x − y + z (although notPlus-Minus ± symbol isn’t just useful for equations, it’s also applied for a shortcut for ‘plus or minus’. In figures you’ll normally see f