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Positive

Status: Stable

documented, exercised by the test suite and/or worked examples, with no known limitations recorded.

Description

Positive[x]

gives True if x is a positive real number, and False if x is a

Notes manifestly negative real number, a non-real complex number, or zero. For non-numeric x the expression is left unevaluated. Positive is Listable, so it threads over lists element by element.

Examples (3)

Every input below was run against the current Mathilda build and its output recorded.

Basic examples (3)

In[1]:= Positive[{1.6, 3/4, Pi, 0, -5, 1 + I, Sin[10^5]}]
Out[1]= {True, True, True, False, False, False, True}

In[2]:= Positive[{x, Sin[y]}]
Out[2]= {Positive[x], Positive[Sin[y]]}

In[3]:= Positive[Sqrt[-2]]
Out[3]= False

Implementation notes

Attributes: Listable, Protected.

References

See also: NumericQ, Negative, NonNegative, NonPositive, NDArray