The √( Command

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Command Summary

Take the square root of a number.

Command Syntax

√(input)

Menu Location

Press 2nd √ to paste the √( command.

Calculator Compatibility

TI-83/84/+/SE

Token Size

1 byte

Takes the square root of a positive or negative number. It works exactly the same as 2^×√ or ^(1/2) but is smaller and uses an ending parenthesis. If used on a list, it will return a list with the square root of each element.

√(4)
        2
√(2)
        1.414213562

√({1,-1})
        {1 i}

This may return a complex number or throw ERR:NONREAL ANS (depending on mode settings) if taking the square root of a negative number.

Optimization

Never raise something to the one-half power explicitly; use this command instead.

:X^(1/2)→X
can be
:√(X→X

Error Conditions

• ERR:NONREAL ANS when taking the square root of a negative number in Real mode.

Related Commands

• ^
• ×√
• ³√(
• R►Pr(

.