set terminal postscript landscape monochrome "Helvetica" 16
set output 'poly3b.ps'
x1(u) = u
x2(u) = u*log(u)
x3(u) = u*u
x4(u) = u*u*u
x5(u) = 2**u
x6(u) = sqrt(u)
x7(u) = log(u)
x8(u) = u**6
set label 1 "y=n**6" at 24.8,4e08
set label 3 "y=2**n" at 28,1.5e09
set nokey
set title "Polynomial vs exponential behaviour for large n"

plot  [u=10:31] x5(u), x8(u)
set terminal X11
replot