commandline session
> curve(x^3 - 5*x, from=-4, to=4)
> png(file="RcurveA.png")
> curve(x^3 - 5*x, from=-4, to=4)
> dev.off()
null device
1
> png(file="RcurveB.png")
> curve(x^3 - 5*x, from=-4, to=0)
> dev.off()
null device
1
> png(file="RcurveC.png")
> curve(x^3 - 5*x, from=10, to=50)
> dev.off()
null device
1
>


