import math._
def f(x:Double):Double={
    // 3*x*x+x  // or 3*math.pow(3,2)+x
    sin(x)
} //> f: (x: Double)Double
clear ; jumpTo(-10*10,f(-1)*100)
for(x <- -10.0 to 10 by 0.1) {
    //print(x) ; print("\t") ; println(f(x))
    moveTo(x*10,f(x)*100)
}