how can using matlab function?

using matlab function i have a parse error ,and compiler error.

[Stephen23]

You need to show us your code and the exact, complete error messages. You should edit your original question and:

• give a more detailed explanation
• upload your Mfiles using the paperclip button
• paste the complete error messages and format them using the {} Code button.

And please read this, it will make your own life easier:

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer