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dave vanhorn wrote:
>       #declare f = function {K*y}
>       #declare Twist_x = function (x,y,z)
>                          {x * cos (f (y)) + z * sin (f (y))} <-- "Invalid 
> number of parameters, 1 supplied, 3 required.

	The problem is in the declaration for f. Try one of the following
instead:

#declare f = function {K*x}

or

#declare f(y) = function {K*y}

		Jerome
- --
+------------------------- Jerome M. BERGER ---------------------+
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