Plotting two equations for a varying number

I cant get each of these equations to show up only one comes up and i cant tell why.

[Rik]

What are the axis limits? Are you expecting the values to have approximately the same x and y range? If you post your code as code, instead of an image, we could run it. (if you do, use the {}Code button for correct formatting)

[Walter Roberson]

Why do you bother calculating a(i) when you are not going to use it later?

[Image Analyst]

The badly-named "a" is used in the line of code

plot(a, AR);

But I'm not going to type in all that code. I'm waiting for Austen to paste in the code or use the paper clip icon to attach the m-file.

When you set a0 equal to .1625, did you mean to set the first element of "a" to that? Like this:

a(1) = 0.1625;

and then use a(1) in your code instead of a0?