MATLAB r2010a.牛顿法解非线性方程组,xxxxxx

MATLAB r2010a.牛顿法解非线性方程组,xxxxxx
syms x y; z=[0.5*sin(x)+0.1*cos(x*y)-x;0.5*cos(x)-0.1*cos(y)-y]; [r,n]=mulSimNewton(z,[0 0]) Undefined function 'Jacobian' for input arguments of type 'sym'.Error in mulSimNewton (line 14) dF = Jacobian(F);