??? Error: File: C:尀Users尀Administrator尀Untitled9.m Line: 9 Column: 26 Missing MATLAB operat哪里错

for k=2:N x(:,:,1); x_(:,:,1)=[0.9;0]; i(k)=1-0.2*sin(k/20); m=q*randn(n,1); x(:,:,k)=A*x(:,:,k-1)+[-0.00028;0.00413*(1-exp(-0.002))]*i(k)+m; x_(:,:,k)=A*x_(:,:,k-1)+[-0.00027;0.00413*(1-exp(-0.002))]*i(k); f_(k)=3+13.433*x_(1,:,k).^2+284.23*x_(1,:,k).^3-453.64*x_(1,:,k).^4+355.88*x_(1,:,k).^5-108.97*x_(1,:,k).^6; C(1,1,k)=f_(k)./x(1,:k); C(1,2,k)=-1; z(k)=C(:,:,k)*x(:,:,k)-0.00523*i(k)+r*randn; z_(k)=C(:,:,k)*x(:,:,k)-0.00523; P0=0.5*eye(n); P(:,:,1)=P0; P1(:,:,k)=A*P(:,:,k)*C(:,:,k); P12(:,:,k)=P1(:,:,k)*C(:,:,k)`; K(:,:,k)=P12(:,:,k)*inv(C(:,:,k)*P12(:,:,k)+R); x_(:,:,k)=x_(:,:,k)+K(:,:,k)*(z(k)-(C(:,:,k)*x_(:,:,k)-0.00525*i(k))); P(:,:,k)=P1(:,:,k)-K(:,:,k)*P12(:,:,k)`; erro(:,k)=sprt(iag(P(:,:,k))); if(x_(1,:,k)<0||x_(1,:,k)>1) break endend