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InexactNumberQ

InexactNumberQ(expr)

returns True if expr is not an exact number, and False otherwise.

Examples

>> InexactNumberQ(a)
False
 
>> InexactNumberQ(3.0)
True
 
>> InexactNumberQ(2/3)
False

InexactNumberQ can be applied to complex numbers:

>> InexactNumberQ(4.0+I)    
True

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