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// The equation 8*x^3-12*x^2-2*x+3==0 has three real roots.
// the graph of this function can be observed here.
xset('window',0);
x=-1:.01:2.5; // defining the range of x.
deff('[y]=f(x)','y=8*x^3-12*x^2-2*x+3'); //defining the cunction
y=feval(x,f);
a=gca();
a.y_location = "origin";
a.x_location = "origin";
plot(x,y) // instruction to plot the graph
title(' y = 8*x^3-12*x^2-2*x+3')
// from the above plot we can infre that the function has roots between
// the intervals (-1,0),(0,1),(1,2).
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