matlab解微分方程组出错?>>[x,y,z,v,w]=dsolve('Dx=-2*(A+A1)*x+u1*(y+z)+u*v','Dy=-2*u1*y+A1*(x+v)','Dz=-2*u1*z+A1*(x+v)','Dw=-2*u*w+A*v','Dx+Dy+Dz+Dv+Dw=0','x(0)=1,y(0)=0,z(0)=0,v(0)=0,w(0)=0')Errorusing==>dsolveError,(incombine/radical)i

　　matlab解微分方程组出错?

　　>>[x,y,z,v,w]=dsolve('Dx=-2*(A+A1)*x+u1*(y+z)+u*v','Dy=-2*u1*y+A1*(x+v)','Dz=-2*u1*z+A1*(x+v)','Dw=-2*u*w+A*v','Dx+Dy+Dz+Dv+Dw=0','x(0)=1,y(0)=0,z(0)=0,v(0)=0,w(0)=0')

　　Errorusing==>dsolve

　　Error,(incombine/radical)integertoolargeincontext