I• I represents the imaginary unit  . • I can be entered as  ,  ii or \[ImaginaryI].
•  , jj and \[ImaginaryJ] can also be used.
• I is output as  .
• See also: Im, Re.
Examples Using InstantCalculatorsHere are the InstantCalculators for the I function. Enter the parameters for your calculation and click Calculate to see the result.
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Entering Commands DirectlyThis is the definition of I.
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This is a famous result due to L. Euler.
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The solution to this equation involves complex numbers.
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Ordinary Mathematical NotationThis is the definition of .
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This is a famous result due to L. Euler.
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