[tex=1.786x1.214]s/df2ZE+BhF7kkKI1Rb3ww==[/tex]为[tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]阶可逆矩阵, [tex=0.786x1.0]5SeCOJOzMwSNbX8MGx2Qsg==[/tex] 为 [tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]阶实矩阵，则 [tex=6.929x2.929]jcCMHflCR8OS9TosV6N5vBtqjFrNFsn83APbaxuqgln63xB3nfahLwrMM85/LxtPY4RxXLjG8JfZoVOucdtAWwxp7lBJllC2JESEeG54wP4=[/tex] 未知类型：{'options': ['\xa0[tex=6.929x2.929]jcCMHflCR8OS9TosV6N5vJUgVgo3x6vXk9N/vUWyLEvat1ZoUZMxciRgzWOBoCobJknuP3wVCPZqPiVKG8KBkonavIZq1O6in9MQ0fnT4gE=[/tex]', '[tex=6.929x2.929]jcCMHflCR8OS9TosV6N5vBudY2tyYOh3TYTCyGTMUmFI/3Zji2953EdQwwwJuTvTyz8F35XY5L6EjywVGxCEr4J1EElv7YSlRknyvPLW268=[/tex]', '\xa0[tex=8.571x3.357]jcCMHflCR8OS9TosV6N5vLqSrJ16mmzithEqQpvCLTrAEsp2z1vpZs2MtM3Y54trjECuNZMNR47yka+PmitJeDzItICWN+CYfO8KH3q4Gro=[/tex]', '\xa0[tex=6.929x2.929]jcCMHflCR8OS9TosV6N5vIZTNtm+7a+AKv4cC0DKySkOeaGfirfrwDaVrn5qw/SippfyQ/D2eX0IoMdwYv8l8Rr6DOimCWozMPCNCJrKEyc=[/tex]'], 'type': 102}

求曲线 [tex=6.929x2.929]7EJHVCtO2IWq3KpdB+jQsv6FwiTm8kMJkqqPTKC4ZLDyMKMo25tRV76oA6SvhcUR3RNtZX0Mrmxuz4hAwf6GUsrB5nUDggK2te3GNEfK95k=[/tex] 在三个坐标面上的投影曲线

求下列空间曲线对三个坐标面的射影柱面方程[tex=6.929x2.929]fnpmC2J6JmQBLyo5NmGAz89fzajrsY2GMIIvBoKtXjO+lqq5NopT3YJ83PH72Fblp9WmsXxYzehhs0YZeEuvXAdO3tIkTHGZkNGWbsVLCs8=[/tex]

设[tex=1.857x1.357]bZ4KhrFbnCaidqbMGQZfww==[/tex]是连续函数，且[tex=6.929x2.929]JrvpnV4Q/3VSc+XiE0lTAISObA88ybskVH85vT/SPiU=[/tex]，则[tex=2.571x1.357]Q43JGKfTHnvC0If10mVw/g==[/tex]______.

设[tex=1.786x1.214]s/df2ZE+BhF7kkKI1Rb3ww==[/tex] 均为可逆矩阵, 则 [tex=6.929x2.929]jcCMHflCR8OS9TosV6N5vIGhiwlnCK1+XNgBVzJXW/QT/cbJGWjSjao/t7X7CkAmzk8Gofyi1//9NarKnW1KOLqARQHET0Gjl4VFeM4G39w=[/tex][input=type:blank,size:6][/input]

A,B为n阶可逆矩阵，O为n阶零矩阵，则[tex=6.929x2.929]075gCzZzsMRb6HYXYk9X93kSIUIgNlBLp89FEviCV1KHGd4HCNt9JMHuoq2nvEAZeIsmEZ9GnWLy/WDh/1pFOA==[/tex]（）[tex=36.571x3.357]etD4JwobkN7oD9Rt519sbV/aK7Ogl4Wl7pcCP/H9YJ40LLR8fQVOb+gkbUhkQF0nSK/0XcdnDQehBz+U3sv+/tKW3/6XwiQd2wf0CezLg5BmdfYif03A3Vy7OOyn/MmM5+86q9WpRxc1NpKfgRKREpT2y5UNI3UK3v/XUo+YzhYip2GBfkK0KLe7Ec9M8TzrL1SA8Y59ynj4iDRilDT0r0tbC2X10MIrr/Q9WlN5XQk7kOyWfzH7m/Zn1O765ZycsRtd+XV5TltDXHHULY0Gb1XYS1SE3Ns7Wu/uZN0driOLpSb2X94RmzzPnTbF5EfDdyA62WyhkGrcikJd/IzHZMEz8KEF2uixawUp3SLRPrR16dmPbDEDxjMLkt5R7bK9BqmFd6JpQTK+Vv+BC6oqDw==[/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}

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)