set terminal postscript landscape monochrome "Helvetica" 16
set output 'poly1a.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)
set label 1 "y=n" at 5,5.5
set label 2 "y=sqrt(n)" at 5,2.7
set label 3 "y=log(n)" at 5,1.1
set nolabel
set nokey
set title "Square root and log versus line for larger n"

plot  [u=0:100] x1(u), x6(u), x7(u)
set terminal X11
replot