- If x does not equal 0, the reciprocal of x = 1/x
- If a does not equal 0, the reciprocal of a/b = b/a
- Because the product of a non-zero number times its reciprocal equals 1, or x * 1/x = 1, the reciprocal of a number is also called its multiplicative inverse
- A number raised to a negative exponent equals its reciprocal raised to a positive exponent such as b-3 = (1/b)3