lybniz software package provides mathematical function graph plotter, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install lybniz
lybniz is installed in your system.
Make ensure the lybniz package were installed using the commands given below,
$ sudo dpkg-query -l | grep lybniz *
You will get with lybniz package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Mathematics |
| Package | lybniz |
| Version | 1.3.2-2.1 |
| Description | mathematical function graph plotter |
| Sub Section | math |