Need help for solving mathematics problem.

Hello guys, I'm new here and for the first time I start using MatLab. I have some question from my teacher that I need to be solve, but because I'm still nooby in this program I don't know how to do it, that's why I write here and ask for some help. So here are the problem:

1)

Thank you in advance!

[Walter Roberson]

You did not ask a question. Please read

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