Solve a Series

I put together a formula which include two variables in a series that give me the solution T. I need to solve the series giving the T and found one of the two variables. Any help available? Thank you Regards

Answer 1

[Walter Roberson]

You have not give us enough information to be sure that what you want to do is even theoretically possible.

For example, if I had sin(x) + cos(y) = T, then I could do a series expansion on the sin() and the cos() and add the two, and arrive at a series with two variables that had a known result. It would, however, not be possible to solve for the variables as there would be an infinite number of results (even just within the first cycle.)