Some syntax rules must be complied with:
name(var1[, var2])=term [;extensions]
The function name. If the first character is “r” the parser assumes that you are using polar coordinates. If the first character is “x” (for instance “xfunc”) the parser expects a second function with a leading “y” (here “yfunc”) to define the function in parametric form.
The function's variable
The function “group parameter”. It must be separated from the function's variable by a comma. You can use the group parameter to, for example, plot a number of graphs from one function. The parameter values can be selected manually or you can choose to have a slider bar that controls one parameter. By changing the value of the slider the value parameter will be changed. The slider can be set to an integer between 0 and 100.
The expression defining the function.
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