gnuplot can be used as a tool to interactively explore the structure of mathematical functions, as well as to create illustrations for publication or education. It has built-in knowledge of both elementary functions, such as sine and cosine, and some special functions, such as Bessel functions and elliptic integrals. The following figure shows the plotting of the
Start up an interactive gnuplot session and make sure that your graphic terminal of choice is selected, and working, using the
set term command (for example, at the console you simply type
gnuplot, and, to change the default terminal to ...