' 8Pack*?8 @EACTEACT1f(@`======020812 ======={To input an identity matrix Use the Identity command to create an identity matrix. @RUNMAT[EXE]8Pack*?( @GUIDElKEYLOG(@NOTEh!%#%)$)$" ty@RUNMAT,RUN2D1  UsTo check the dimensions of a matrix @RUNMAT[EXE]8Pack*?( @GUIDEKEYLOG(NOTE!%Q$PPPPPPPPPPPPPPPPPPPP#%)%)$" !!#%)%)$" vy@RUNMAT,RUN2D1