Inadmissible data type or value. overflow.

asked 2019-09-06 18:25:17 +0200

JackZed gravatar image
Function Derivative(optional x,optional n)  
    dim d as double     
    if (x = 0 and (n = 0 or n = 1)) then
    end if
    d = n*x^(n-1) 
    Derivative = d
End Function
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It's almost worthless without showing how you call that function. No way to figure out what's wrong with your call of the function. For me e.g. =DERIVATIVE(4,2) works an shows the correct value of the derivative of the quadratic function at x=4.

Opaque gravatar imageOpaque ( 2019-09-06 18:41:55 +0200 )edit