Reference: createGraph

createGraph(expr, var, int) returns the graph { (x, y) : y = expr(var), var ∈ int }, where expr (a string, an expression) is a function of var (a string, a valid identifier), and the pre-image is the interval (or, generally, set) int.

Examples: set ≔ createGraph("sin(x)", "x", [-10, 10, 0.001])
          drawSet("set")