I want to instal Matlab program but my os told me I have to instal x11

Dear Sir/Madam,

My name is Saman Shomali.I bought one airbook.

As to inform you,I wanted to install Matlab application.When I wanted to run this app,I saw one error.I have to install x11.I do not know about that.Please send me some details and link if possible.

Thank you for your cooperation and I am waiting for your reply as soon as possible.

Regards,

Saman Shomali.

7.11.2012.