In mathematics, the additive inverse of a number a is the number that, when added to a, yields zero. This number is also known as the opposite (number), sign change, and negation. For a real number, it reverses its sign: the opposite to a positive number is negative, and the opposite to a negative number is positive. Zero is the additive inverse of itself.
近义、反义、联想词
近义词
n.
inverse, opposite
英英词典
additive inverse n.
(mathematics) one of a pair of numbers whose sum is zero; the additive inverse of -5 is +5