Public Function AI( _ ByVal vX As Variant _ ) As Variant
AI(-.5) = 0.47572809161054 AI(0.0) = 0.355028053887817 AI(+.5) = 0.231693606480833See also:
AIE Function BI Function DAI FunctionvX: Function returns Null if vX is Null or cannot be fixed up to a Double precision floating point number.
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