1.1 : Properties of real numbers

Question 1

opposite or additive inverse

Answer 1

the opposite or additive inverse of any number a is -a. The sum of opposites is 0.

Question 2

reciprocal or multiplicative inverse

Answer 2

reciprocal or multiplicative inverse of any nonzero number a is 1/a The product of reciprocals is 1

Question 3

Absolute value of a real number

Answer 3

absolute value of a real number is its distance from zero on the number line.