what is the reciprocal of 0
Submit. Â· just now. Report Abuse. No; the reciprocal of a number x is 1/x, and as 1/0 is undefined (because you cannot divide by zero), the reciprocal of 0 is undefined. just now. Report Abuse. No; the reciprocal of a number x is 1/x, and as 1/0 is undefined (because you cannot divide by zero), the reciprocal of 0 is undefined.