Hello Neelakanteshwar,
You can open MATLAB in ubuntu using command line. Apart from that there is a package matlab-support which creates a shortcut for MATLAB in the launcher and applies a few bugfixes created by the community. You can install it with,
sudo apt install matlab-support
Please refer to the following documentation for more information for this step,
Also apart from this you can also make a shortcut using gnome panel like this,
sudo apt-get install gnome-panel
sudo gnome-desktop-item-edit /usr/share/applications/ --create-new
And then, MATLAB will be in your applications menu icon.
To know more information please refer the following MATLAB answer and documentation,
This would help your problem.
