name of the function of function curve is to be created of
Optionalclosed?: booleantrue to set the point locus closed
Optionalcolor?: stringColor, black by default
Optionalhidden?: booleantrue to get the point locus masked
OptionallineStyle?: stringLine style (line|-|dot|.|dashdash|--|dashdotdot|-..|dashdotdotdot|-...|dashdashdash|---)
Optionalopacity?: numberopacity (0 to 1), 1 by default
Optionalthickness?: numberThickness of the stroke
number of points used to create the curve (point locus)
Adds the curve of a function in the system of axis frame syntaxes
addCurve(calc, x),addCurve(calc, x, color),addCurve(calc, x, color, lineStyle),addCurve(calc, x, color, lineStyle, thickness)andaddCurve(calc, x, color, lineStyle, thickness, rep)are allowed too