Error, (in plot3d) at least three arguments are required
For users of Maple 18 and earlier versions: This error occurs when plot3d is not passed the minimum number of arguments it requires to plot a three-dimensional surface.
In order to plot a three-dimensional surface, plot3d requires the following parameters:
the expression, function, or operator describing the surface
the range of values for the first variable
the range of values for the second variable
Note: Unlike the plot command, plot3d does not assume default ranges for the plotting variables. Not giving both ranges is a common cause for this error.
To correct this error, provide plot3d at least three arguments.
Example 1: Using an expression for the three-dimensional surface
The following Maple input tries to plot z=x3−3⁢x⁢y2, but it does not specify the ranges for the variables x and y.
Provide ranges for x and y to correct the error.
Example 2: Using a functional operator for the three-dimensional surface
This example uses a functional operator, f, to define the surface.
For functional operators, ranges must be given in the form a..b, not as equations.
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