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FilledSmallSquare UnitStep[x] represents the unit step function, equal to 0 for and 1 for .

FilledSmallSquare UnitStep[, , ... ] represents the multidimensional unit step function which is 1 only if none of the are negative.

FilledSmallSquare Some transformations are done automatically when UnitStep appears in a product of terms.

FilledSmallSquare UnitStep provides a convenient way to represent piecewise continuous functions.

FilledSmallSquare UnitStep has attribute Orderless.

FilledSmallSquare For exact numeric quantities, UnitStep internally uses numerical approximations to establish its result. This process can be affected by the setting of the global variable $MaxExtraPrecision.

FilledSmallSquare See Section 3.2.2 and Section 3.5.12.

FilledSmallSquare See also: Sign, Positive, DiracDelta, DiscreteDelta, KroneckerDelta.

FilledSmallSquare New in Version 4.

Further Examples