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BUILT-IN MATHEMATICA SYMBOL
HeavisideLambda
HeavisideLambda[x]
represents the triangle distribution 
which is nonzero for 
.
HeavisideLambda[x1, x2, ...]
represents the multidimensional triangle distribution 
which is nonzero for 
.
Examplesopen all
Basic Examples (2)
Plot in one and two dimensions:
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Higher derivatives involve DiracDelta distributions:
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