alleryThe sign ∓, used together with ±, denotes what?
AThe opposite sign
BThe same sign
CA zero value
DA square root
Answer & Solution
Correct answer: A. The opposite sign
1. ∓ is paired with ± in one formula.
2. It means + if ± is −, and − if ± is +.
3. So it always takes the opposite sign.
_Source: Wikipedia, Glossary of mathematical symbols, Arithmetic operators_
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