On Sun, 16 Dec 2012, Qi Shi wrote:
how to plot a function in gretl, such as y=2+x+x^2?
See /Tools/Plot a curve. In the box that appears, type the
right-hand side (that is, skip the "y="):
2+x+x^2
You want something that is a valid argument to the "plot" command in
gnuplot.
Allin Cottrell