作业 1107 返回 目录 此页面提供 作业 1107 有关资料。 此作业的试题 PDF 提供于以下 链接 。 答案见下。 11/7 作业 Homework 13 (a) (8,−12,5)(8, -12, 5)(8,−12,5) . (b) (1,1,−1)(1, 1, -1)(1,1,−1) . (40,58)(40, 58)(40,58) . ((−4,−7),(72,6))( ( -4, -7 ), ( \frac{7}{2}, 6 ) )((−4,−7),(27,6)) . (2,0,−1)(2, 0, -1)(2,0,−1) or (11,6,−1)(11, 6, -1)(11,6,−1) . ((9,6,0),(0,−4,−3))( (9, 6, 0), (0, -4, -3) )((9,6,0),(0,−4,−3)) . a. (4−10−11101−2)\begin{pmatrix}4 & \mathop{-}1 & 0\\ \mathop{-}1 & 1 & 1\\ 0 & 1 & \mathop{-}2\end{pmatrix}4−10−11101−2 . b. (8,2,2)(8, 2, 2)(8,2,2) . (−31−52)\begin{pmatrix}\mathop{-}3 & 1\\ \mathop{-}5 & 2\end{pmatrix}(−3−512) , (−21−53)\begin{pmatrix}\mathop{-}2 & 1\\ \mathop{-}5 & 3\end{pmatrix}(−2−513) . SpaceDimensionBasisNullA\operatorname{Null} ANullA333((0,−2,1,0,0),(0,0,−2,4,−2),(1,0,0,0,0))( (0, -2, 1, 0, 0), (0, 0, -2, 4, -2), (1, 0, 0, 0, 0) )((0,−2,1,0,0),(0,0,−2,4,−2),(1,0,0,0,0))NullAT\operatorname{Null} A^\mathrm TNullAT111((−1,1,−1))( (-1, 1, -1) )((−1,1,−1))ColA\operatorname{Col} AColA222((1,1,0),(3,4,1))( (1, 1, 0), (3, 4, 1) )((1,1,0),(3,4,1))RowA\operatorname{Row} ARowA222((0,1,2,3,4),(0,1,2,4,6))( (0, 1, 2, 3, 4), (0, 1, 2, 4, 6) )((0,1,2,3,4),(0,1,2,4,6))NullB\operatorname{Null} BNullB111((0,1,−2,1))( (0, 1, -2, 1) )((0,1,−2,1))NullBT\operatorname{Null} B^\mathrm TNullBT000()()()ColB\operatorname{Col} BColB333((1,6,9),(2,13,26),(3,20,44))( (1, 6, 9), (2, 13, 26), (3, 20, 44) )((1,6,9),(2,13,26),(3,20,44))RowB\operatorname{Row} BRowB333((1,2,3,4),(6,13,20,27),(9,26,44,62))( (1, 2, 3, 4), (6, 13, 20, 27), (9, 26, 44, 62) )((1,2,3,4),(6,13,20,27),(9,26,44,62)) Above Rendered from Markdown
11/7 作业 Homework 13 (a) (8,−12,5)(8, -12, 5)(8,−12,5) . (b) (1,1,−1)(1, 1, -1)(1,1,−1) . (40,58)(40, 58)(40,58) . ((−4,−7),(72,6))( ( -4, -7 ), ( \frac{7}{2}, 6 ) )((−4,−7),(27,6)) . (2,0,−1)(2, 0, -1)(2,0,−1) or (11,6,−1)(11, 6, -1)(11,6,−1) . ((9,6,0),(0,−4,−3))( (9, 6, 0), (0, -4, -3) )((9,6,0),(0,−4,−3)) . a. (4−10−11101−2)\begin{pmatrix}4 & \mathop{-}1 & 0\\ \mathop{-}1 & 1 & 1\\ 0 & 1 & \mathop{-}2\end{pmatrix}4−10−11101−2 . b. (8,2,2)(8, 2, 2)(8,2,2) . (−31−52)\begin{pmatrix}\mathop{-}3 & 1\\ \mathop{-}5 & 2\end{pmatrix}(−3−512) , (−21−53)\begin{pmatrix}\mathop{-}2 & 1\\ \mathop{-}5 & 3\end{pmatrix}(−2−513) . SpaceDimensionBasisNullA\operatorname{Null} ANullA333((0,−2,1,0,0),(0,0,−2,4,−2),(1,0,0,0,0))( (0, -2, 1, 0, 0), (0, 0, -2, 4, -2), (1, 0, 0, 0, 0) )((0,−2,1,0,0),(0,0,−2,4,−2),(1,0,0,0,0))NullAT\operatorname{Null} A^\mathrm TNullAT111((−1,1,−1))( (-1, 1, -1) )((−1,1,−1))ColA\operatorname{Col} AColA222((1,1,0),(3,4,1))( (1, 1, 0), (3, 4, 1) )((1,1,0),(3,4,1))RowA\operatorname{Row} ARowA222((0,1,2,3,4),(0,1,2,4,6))( (0, 1, 2, 3, 4), (0, 1, 2, 4, 6) )((0,1,2,3,4),(0,1,2,4,6))NullB\operatorname{Null} BNullB111((0,1,−2,1))( (0, 1, -2, 1) )((0,1,−2,1))NullBT\operatorname{Null} B^\mathrm TNullBT000()()()ColB\operatorname{Col} BColB333((1,6,9),(2,13,26),(3,20,44))( (1, 6, 9), (2, 13, 26), (3, 20, 44) )((1,6,9),(2,13,26),(3,20,44))RowB\operatorname{Row} BRowB333((1,2,3,4),(6,13,20,27),(9,26,44,62))( (1, 2, 3, 4), (6, 13, 20, 27), (9, 26, 44, 62) )((1,2,3,4),(6,13,20,27),(9,26,44,62)) Above Rendered from Markdown