geophar software package provides Swiss army knife for the math teacher, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install geophar
geophar is installed in your system.
Make ensure the geophar package were installed using the commands given below,
$ sudo dpkg-query -l | grep geophar *
You will get with geophar package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Mathematics |
| Package | geophar |
| Version | 16.01~dfsg1-3 |
| Description | Swiss army knife for the math teacher |
| Sub Section | Math |
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