Kmplot 1.2.0 is a Mathematical Function Plotter for KDEs. It is designed for KDE 3.5.8.
But you still can use in Gnome Ubuntu.
taufanlubis@toshiba:~$ sudo apt-get install kmplot
Reading package lists… Done
Building dependency tree
Reading state information… Done
kmplot is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.