MATLAB软件中求矩阵范数的命令是___,求数的绝对值的命令是___.
Peg Leg Howell, another Georgian, is brutally honest in "New Prison Blues," while Fred McMullen is assisted by Weaver for "DeKalb Chain Gang," a terrifying story of what it must have been like for many Southern Blacks who found the wrong side of a county sheriff. Merline Johnson, with...