Acceptable Plot Functions
plot(f, h, v, options)
function(s) to be plotted
The procedure plot in Maple accepts three function types: a real function in a single variable expressed as an expression, or a Maple procedure, a parametric function, or a list of points. If a procedure is being specified, operator notation must be used, that is, the procedure name given without parameters, and the range specified as simply a..b rather than as an equation.
A parametric function has the form [x⁡t,y⁡t,t=range⁢of⁢t]. If the option coords=polar is given, the parametric function is interpreted in polar coordinates. Points will be equally spaced along the interval specified by the range of t in the parametric plot specification. The points will not be evenly spaced according to the x⁡t⁢⁢y⁡t specified. The set of lists must contain one undefined variable in it. If each list contained an undefined variable, then a terminal error would occur. Hence, all parametric plots must be parametric with respect to the same variable.
A list of points has the form [[x1,y1],[x2,y2],...,[xn,yn]].
w:=proc(x) if x<0 then -x elif (x>0) and (x<4) then x else -x+8 end if end proc:
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