A.lb=[0;-inf];ub=[inf;inf]
B.lb=[-inf;0];ub=[inf;inf]
C.lb=[-inf;-inf];ub=[inf;0]
D.lb=[-inf;-inf];ub=[0;inf]
A.在MATLAB界面选择菜单“File”→“SetPath”命令
B.在命令窗口运行“pathtool”命令
C.利用path命令设置搜索路径
D.在“CurrentFolder”窗口中设置搜索路径
A.y=dsolve(y '=x+y+1')
B.y=dsolve('Dy=x+y+1')
C.y=dsolve('Dy=x+y+1'; 'x')
D.y=dsolve('Y'=x+y+1', 'x')