set terminal png
set output "fig_test8-1.png"
set xrange [0:3000]
set format y "%.1f"
plot log10(1+x),log10(1+0.1*x),log10(1+0.01*x),log10(1+0.001*x)
#
reset
set terminal png
set output "fig_test8-2.png"
set key right bottom
set format y "%.1f"
set xrange [0.01:10000]
set logscale x
plot 1-exp(-10*x),1-exp(-1*x),1-exp(-0.1*x),1-exp(-0.01*x)
#