Hi all,

I'm trying to plot this two curves in a single cartesian plane, but when I
plot the first one, the plot appears with no negative "y" value. When I plot
the second curve, it almost does not apear in the graph.

I was trying the plot.window but with no success.

Can someone help me with this?

If possible, I'd like to plot this curves in a perfect cartesian plane.

f = function(x) {
  x^2
}
f2 = function(x) {
  -x^2
}

plot(f,-10,10)
abline(h=0, v=0, col = "gray60")
curve(f2,col="orange", add=T)

Thanks in advanced!


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