Using graph to draw anything you want..

"Use Graphing to write or draw anything you want"

While studying calculus at the Middle East Technical University (METU), i found that it is interesting how the graph of a function can be shifted right/left or up/down or made wider/shrink by just changing the position of the constant. I started to think if i can write my name using a graph program, and happily, after a search on google.com, i got the needed program and i started practicing on writing the English alphabets as well the numbers using functions. after that, i could draw my name and started to make my friends name, and they were becoming very happy. 

Now, i am a Mathematics teacher, and I still invest much time in writing using graphing, now i can guess what function can be for a graph with its domain and range, but not 100%, however I am glad for what i have achieved so far. 

Using Graph software, you may come out with: 

I would like to ask you if you can guess some of the functions used to write my name..