Dào shù (reciprocal reading) refers to setting a number mathematically, whose product is 1 multiplied by a number x, which is recorded as 1/x or x, and the process is "multiplication inversion", and all complex numbers except 0 have reciprocal. The reciprocal number can be divided by 1 to get the reciprocal. Numbers whose product is 1 are reciprocal, and 0 has no reciprocal.

Countdown score

Find the reciprocal of the fraction, such as 3/4. Switch 3/4 numerator and denominator, so that the original numerator and denominator are the same. It's four-thirds. 3/4 is the reciprocal of 4/3, or 4/3 is the reciprocal of 3/4. For -2/3, the molecule can be regarded as -2.

Reciprocal integer

Find the reciprocal of an integer, such as12; Divide 12 into component numbers, namely12/1; Then exchange the numerator and denominator of the fraction of 12/ 1 to make the original numerator and denominator. Is112,12 is the reciprocal of112. You can also say that112 is the reciprocal of12. There is also a saying that 12 and 1 12 are reciprocal. 0 has no reciprocal. The reciprocal is 1. (except 0)

Two numbers whose product is 1 are reciprocal.