AoPSWiki
Looking for a challenging geometry text? Preparing for MATHCOUNTS or the AMC exams? Check out Art of Problem Solving's Introduction to Geometry by Richard Rusczyk.
Personal tools

Reciprocal

From AoPSWiki

The reciprocal of a non-zero number r (usually a real number or rational number, but also a complex number or any non-zero element of a field) is its multiplicative inverse. The reciprocal is usually denoted r^{-1} or \frac 1r.

q and r are multiplicative inverses of each other if and only if r \cdot q = q \cdot r = 1.

See Also

This article is a stub. Help us out by expanding it.

Do you have what it takes to be the next brilliant trader, researcher, or developer at Jane Street Capital? Find out in the Careers in Mathematics Forum.
© Copyright 2008 AoPS Incorporated. All Rights Reserved. • FoundationPrivacyContact Us