Can't get equations in compile time for multidimensional root finding.

[pschen]

Hello:

     It seems that I must get equations in compile time and run the multidimensional
     root finding solver. If the equations will be get at runtime, how can I run the
     multidimensional root finding solver?
     How to write the program?
     Anyone occur this problem?
     Thanks very much.

						Ps. Chen