fsolve这段提示是什么意思？
用fsolve求解八元二次方程组提示得到复数无法继续
而我的方程中是只有实数的
为什么会出现复数呢
??? Error using ==> lsqfcnchk>checkfun at 142
User function 'myfun' returned a complex value when evaluated;
FSOLVE cannot continue.
Error in ==> fsolve at 254
fuser = feval(funfcn{3},x,varargin{:});
Error in ==> num_sol1 at 362
= fsolve(@myfun,x0,options);
Caused by:
Failure in initial user-supplied objective function evaluation. FSOLVE cannot continue.
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