Browse Definitions :
Definition

square root symbol

The square root symbol ( ) is used to indicate the quantity or quantities which, when multiplied by itself or themselves, results in the quantity encompassed by the symbol. In engineering applications, the square root is sometimes indicated as the "one-half power," using the fractional exponent 1/2.

Here are two examples of the use of the square root symbol:

In the first instance, the symbol indicates the square root of 4 on the left-hand side, and the two valid resultants on the right-hand side. In the second instance, the expression indicates the square root of the entire quantity ( x + y - z ).

When a square root symbol is used with an expression involving two or more numbers or variables, the quantity affected is indicated by the extent of the horizontal line attached to the surd . The symbol applies only to that quantity underneath the horizontal line.

Also see Mathematical Symbols .

This was last updated in May 2006

Join the conversation

2 comments

Send me notifications when other members comment.

Please create a username to comment.

This is incorrect. The square root symbol denotes the principal square root of a number, not both the positive and negative values. The principal root is the positive value. If one wants to denote both positive and negative roots, the plus-or-minus symbol must occur in front of the radical sign.
Cancel
This is not correct. The square root symbol denotes the principal square root of a number, not both the positive and negative values. The principal root is the positive value. If one wants to denote both positive and negative roots, the plus-or-minus symbol must occur in front of the radical sign.
Cancel

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

  • Whistleblower Protection Act

    The Whistleblower Protection Act of 1989 is a law that protects federal government employees in the United States from ...

  • smart contract

    A smart contract, also known as a cryptocontract, is a computer program that directly controls the transfer of digital currencies...

  • risk map (risk heat map)

    A risk map, also known as a risk heat map, is a data visualization tool for communicating specific risks an organization faces. A...

SearchSecurity

  • certificate authority (CA)

    A certificate authority (CA) is a trusted entity that issues digital certificates, which are data files used to cryptographically...

  • hacktivism

    Hacktivism is the act of hacking, or breaking into a computer system, for a politically or socially motivated purpose.

  • advanced persistent threat (APT)

    An advanced persistent threat (APT) is a prolonged and targeted cyberattack in which an intruder gains access to a network and ...

SearchHealthIT

  • Cerner Corp.

    Cerner Corp. is a public company in North Kansas City, Mo., that provides various health information technologies, ranging from ...

  • clinical decision support system (CDSS)

    A clinical decision support system (CDSS) is an application that analyzes data to help healthcare providers make decisions and ...

  • Health IT (health information technology)

    Health IT (health information technology) is the area of IT involving the design, development, creation, use and maintenance of ...

SearchDisasterRecovery

  • tabletop exercise (TTX)

    A tabletop exercise (TTX) is a disaster preparedness activity that takes participants through the process of dealing with a ...

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a data center.

  • ransomware recovery

    Ransomware recovery is the process of resuming options following a cyberattack that demands payment in exchange for unlocking ...

SearchStorage

  • SSD (solid-state drive)

    An SSD (solid-state drive) is a type of nonvolatile storage media that stores persistent data on solid-state flash memory.

  • file system

    In a computer, a file system -- sometimes written filesystem -- is the way in which files are named and where they are placed ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

Close