calculating the correct spacing between values

Hi

Can you help me with this code?

I am currently trying if and else statements, but am having trouble with the inputs.

Thank you

[Image Analyst]

http://www.mathworks.com/matlabcentral/answers/8626-how-do-i-get-help-on-homework-questions-on-matlab-answers

[Jan]

Please post, what you have tried so far and ask a specific question. The posted image is too small for me to be read.