I meet a interesting nonlinear system in the analysis of an mechanics problem. This system can be shown as following:
Image may be NSFW.
Clik here to view.
wherein, the X and Y is the solutions. A, B, S, and T is the symbolic parameters.
I want to express X and Y with A, B, S, T. Who can give me a help, thanks a lot!
PS:the mw file is given here.