求线性方程组[tex=12.929x5.214]LxijgwYJR62XZBuC+wi8DZf8bEPMKkMlS7MEmOH8WaZiyy/pYJaXjnSTCt7neF2Jp6AzfGmjBvZCED4EgF6Cn/J7VBuqbFLfhIA6S575JTXClnM8JqxT2aVYWaFejDzfmd+nk6Fkmtjd7z9AuvpPRhwQXSphOxtQApmr6FN+7ouaTAj3qzxRokUYjOmPbqRLb8tJ5S1/JYEwI6vbzriWty20JvdwYhJDpRSrzvO6Q1xrR7Aa0wJ5zlB0UfP3sGrtcginWR+G2+lRd3N9zuTy3A==[/tex]的通解
求线性方程组[tex=12.929x5.214]LxijgwYJR62XZBuC+wi8DZf8bEPMKkMlS7MEmOH8WaZiyy/pYJaXjnSTCt7neF2Jp6AzfGmjBvZCED4EgF6Cn/J7VBuqbFLfhIA6S575JTXClnM8JqxT2aVYWaFejDzfmd+nk6Fkmtjd7z9AuvpPRhwQXSphOxtQApmr6FN+7ouaTAj3qzxRokUYjOmPbqRLb8tJ5S1/JYEwI6vbzriWty20JvdwYhJDpRSrzvO6Q1xrR7Aa0wJ5zlB0UfP3sGrtcginWR+G2+lRd3N9zuTy3A==[/tex]的通解
按照方案二的效率指标计算，车公里产量为（）吨公里/车公里。 A: 2.758 B: 2.891 C: 4.125 D: 5.214
按照方案二的效率指标计算，车公里产量为（）吨公里/车公里。 A: 2.758 B: 2.891 C: 4.125 D: 5.214
求齐次线性方程组的一个基础解系：[tex=12.929x5.214]fnpmC2J6JmQBLyo5NmGAz6pZlhoMqLCw+aOu+qVTpRz54GLvHoZ9CwToEna3ZjO7BuHQpmBhpZ1yOBVPjFU70F99mqfFQFQfUmeF5d2OxnRuSLEUsqsLqteUrE3IU3SUk6+VJ0ShpE0U+3UeY5WxxklqkOuMdgVOurz5sNPA91GZ/RPmS/kvL1Lza3U38Ti/d2rW1Kyx/Q3qHbnq3JHcTbHS7IHxyvBb+CdQlTZHuL5fxVvUR8G+qrEN3L8O70Z8aTJK+VcdQFPJNSc7DB0h6w==[/tex]
求齐次线性方程组的一个基础解系：[tex=12.929x5.214]fnpmC2J6JmQBLyo5NmGAz6pZlhoMqLCw+aOu+qVTpRz54GLvHoZ9CwToEna3ZjO7BuHQpmBhpZ1yOBVPjFU70F99mqfFQFQfUmeF5d2OxnRuSLEUsqsLqteUrE3IU3SUk6+VJ0ShpE0U+3UeY5WxxklqkOuMdgVOurz5sNPA91GZ/RPmS/kvL1Lza3U38Ti/d2rW1Kyx/Q3qHbnq3JHcTbHS7IHxyvBb+CdQlTZHuL5fxVvUR8G+qrEN3L8O70Z8aTJK+VcdQFPJNSc7DB0h6w==[/tex]
求此齐次线性方程组的解空间的维数和一组基：[tex=12.929x5.214]GE56u9QCDTqcLxZ66HADyjJiEdC+WzN+E7rRFVulsHzwEGCZlvBTDhubyqWgym2tUklBOU7Ax86AZIS23og3Cx7fipr4HxLQENiGaJzcZri/yvEYSZDLrJweVwvWq/HoqiQHHFwX9jlu1yFo2GrQw78zE9sK+X4dhfwxrsVeCH32CXlFk+dwbX6TnrtsV4bnSeX82gk2RgJsU/5rHSTyBQHgzOYie7ibtKb2TflGEvBCHQf4oUgZo4PLyy1v9qQBUXGyIGkfgFIm915I2/FG/H9q4AJorDlWs6xFyDZp9Eo=[/tex]
求此齐次线性方程组的解空间的维数和一组基：[tex=12.929x5.214]GE56u9QCDTqcLxZ66HADyjJiEdC+WzN+E7rRFVulsHzwEGCZlvBTDhubyqWgym2tUklBOU7Ax86AZIS23og3Cx7fipr4HxLQENiGaJzcZri/yvEYSZDLrJweVwvWq/HoqiQHHFwX9jlu1yFo2GrQw78zE9sK+X4dhfwxrsVeCH32CXlFk+dwbX6TnrtsV4bnSeX82gk2RgJsU/5rHSTyBQHgzOYie7ibtKb2TflGEvBCHQf4oUgZo4PLyy1v9qQBUXGyIGkfgFIm915I2/FG/H9q4AJorDlWs6xFyDZp9Eo=[/tex]
求此齐次线性方程组的解空间的维数和一组基：[tex=12.929x5.214]GE56u9QCDTqcLxZ66HADyjJiEdC+WzN+E7rRFVulsHzwEGCZlvBTDhubyqWgym2tUklBOU7Ax86AZIS23og3Cx7fipr4HxLQENiGaJzcZri/yvEYSZDLrJweVwvWq/HoqiQHHFwX9jlu1yFo2GrQw78zE9sK+X4dhfwxrsVeCH32CXlFk+dwbX6TnrtsV4bnSeX82gk2RgJsU/5rHSTyBQHgzOYie7ibtKb2TflGEvBCHQf4oUgZo4PLyy1v9qQBUXGyIGkfgFIm915I2/FG/H9q4AJorDlWs6xFyDZp9Eo=[/tex]
求此齐次线性方程组的解空间的维数和一组基：[tex=12.929x5.214]GE56u9QCDTqcLxZ66HADyjJiEdC+WzN+E7rRFVulsHzwEGCZlvBTDhubyqWgym2tUklBOU7Ax86AZIS23og3Cx7fipr4HxLQENiGaJzcZri/yvEYSZDLrJweVwvWq/HoqiQHHFwX9jlu1yFo2GrQw78zE9sK+X4dhfwxrsVeCH32CXlFk+dwbX6TnrtsV4bnSeX82gk2RgJsU/5rHSTyBQHgzOYie7ibtKb2TflGEvBCHQf4oUgZo4PLyy1v9qQBUXGyIGkfgFIm915I2/FG/H9q4AJorDlWs6xFyDZp9Eo=[/tex]
求下列齐次线性方程组的一个基础解系，并用它表出全部解：[tex=12.929x5.214]fnpmC2J6JmQBLyo5NmGAz9r6Naxeh1VZo2pa70Fi0YrvyusvKYV7f+SW6S6JVcx4zKkNkZhum9d7sPH/LGiS+VmP+1V9Cw0EYFO2D6hyfz0lY4C/jQy/uwK/7JWwim5r9v7lv61V+29rQ7SmJ4TSDQ/VSWz4IjmqVGhqyVvqzDGaAWnbHux09zgYhFqZiw3xV+SebmY2TGwnx2VYvPAQH/c5G8DegDgGZ7oLYgm3JCcyi/emhY09ULfCshnCX8cJnO/GODWa0SSOlNxPvmcgOg==[/tex]
求下列齐次线性方程组的一个基础解系，并用它表出全部解：[tex=12.929x5.214]fnpmC2J6JmQBLyo5NmGAz9r6Naxeh1VZo2pa70Fi0YrvyusvKYV7f+SW6S6JVcx4zKkNkZhum9d7sPH/LGiS+VmP+1V9Cw0EYFO2D6hyfz0lY4C/jQy/uwK/7JWwim5r9v7lv61V+29rQ7SmJ4TSDQ/VSWz4IjmqVGhqyVvqzDGaAWnbHux09zgYhFqZiw3xV+SebmY2TGwnx2VYvPAQH/c5G8DegDgGZ7oLYgm3JCcyi/emhY09ULfCshnCX8cJnO/GODWa0SSOlNxPvmcgOg==[/tex]
下列变量组（）是一个闭回路。 A: {x，x，x，x，x，x} B: {x，x，x，x，x} C: {x，x，x，x，x，x} D: {x，x，x，x，x，x}
下列变量组（）是一个闭回路。 A: {x，x，x，x，x，x} B: {x，x，x，x，x} C: {x，x，x，x，x，x} D: {x，x，x，x，x，x}
以下谓词蕴含式正确的是（）: (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)
以下谓词蕴含式正确的是（）: (∀x) (A(x)→B(x))=>( ∀x)A(x)→(∀x)B(x)|(∀x) (A(x)↔B(x))=>( ∀x)A(x)↔(∀x)B(x)|(∀x)A(x)∨(∀x)B(x)=>( ∀x) (A(x)∨B(x))|(∃x) (A(x)∧B(x))=>(∃x)A(x)∧(∃x)B(x)
以下谓词蕴含式正确的是（）: (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)
以下谓词蕴含式正确的是（）: (?x) (A(x)→B(x))=>( ?x)A(x)→(?x)B(x)|(?x) (A(x)?B(x))=>( ?x)A(x)?(?x)B(x)|(?x)A(x)∨(?x)B(x)=>( ?x) (A(x)∨B(x))|(?x) (A(x)∧B(x))=>(?x)A(x)∧(?x)B(x)
下列式中错误的是： A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)
下列式中错误的是： A: (∀x)(A(x)Úp(x)) Û (∀x)A(x)Ú (∀x)p(x) B: ($x)A(x) Ù p Û ($x)(A(x) Ù p ) C: (∀x)(A(x)ÚB(x)) Þ (∀x)A(x)Ú( ∀x)B(x) D: ($x)(A(x)ÙB(x)) Þ ($x)A(x)Ù( $x)B(x)