求助!关于fsolve求解方程组的问题

我用fsolve求解超越方程组，为了提高求解精度，调节了options=optimset('TolFun',1e-30,'TolX',1e-20)，就出现了Optimization terminated: relative function value changing by less than max(options.TolFun^2,eps) and sum-of-squares of function values is less than sqrt(options.TolFun).请问这是什么意思，我该如何处理。