iterative root solution

Hello,

I was trying to do the following:

- I create a function y of a variable x with a parameter "a"

- I solve to find the value of x which is root of this function

How can I do this repetitively for different values of the parameter "a"? Please see attached MC 12 file.

I tried making "a" an array, but then I get an error if I try to define an "array function" y(x)_i.

Thanks for the help!

Gigi