> but I need an equation in terms of x,y,z after all > that. So, I declared them as 'syms'. I cannot give > some numbers to it. But I want to have three such > equation finally and I want to have a solution > satisfying them. > > > Message was edited by: Srinath
For three equations which are composed of a sum of 1000 terms, you will never arrive at a solution of the form x=some symbolic expression y=some symbolic expression z=some symbolic expression So it does not make sense to work with symbolic variables. As I adviced you, try to solve for x,y and z numerically using MATLAB's fsolve.