l1a12a13 021222223=1422a23+a1223231+a12a21a C 31032033 1123y2-a12214330132a31 123 例3.405 106 =1×0×6+2×5×(-1)+3×4×0-1x5×0-2×4×6-3×0×(-1) =-10-48=-58. 首页上页返回下页结束 铃首页 上页 返回 下页 结束 铃 -a11a23a32-a12a21a33-a13a22a31  若记 31 32 33 21 22 23 11 12 13 a a a a a a a a a =a11a22a33+a12a23a31+a13a21a32 例 3 1 0 6 4 0 5 1 2 3 - =-10-48=-58 =106+25(-1)+340-150-246-30(-1) 下页