plot tan(x)
plot sin(x)
plot sin(x) with line
show samples 
set samples 100
plot tan(x) with linespoints
set yrange [-20:20]; replot

# exp(x)=24.5   ... exp(x)-24.5 = 0   =>  x0  

# Funkce: 2*x*x*x - 10*x - 5
# tj. x0: p(x0) = 0
#   f(x) = 5    ...    f(x)-5 = 0

set xrange [-10:10]
plot 2*x*x*x-10*x-5
a=5
b=10
print a+b
print a+b*0.4
s="ahoj"
title "nazdar"
set title "nazdar"
set title s
a=-4
a=-10
load 'test.gp'

set samples 400
set isosamples 400
set isosamples 20
set samples 20
set samples 30
set isosamples 30
set isosamples 5
splot x*x-y*y
splot x*x-y*y with pm3d
set palette gray;  replot
set palette color; replot

set term dumb
replot
set term dumb ansi
set term pdf color portrait; set out 'obr.pdf'; replot
set term pdf color; set out 'obr.pdf'; replot
plot 'exp.dat'
plot 'exp.dat', 2*x+1
plot 'exp.dat', 2*x+1, 3*x+1