马歇尔–勒纳条件[tex=12.857x1.357]/reALcMNq/WetrlimkROgMeONMRsQvPuWfB0gnyG9E8=[/tex]
马歇尔–勒纳条件[tex=12.857x1.357]/reALcMNq/WetrlimkROgMeONMRsQvPuWfB0gnyG9E8=[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
设[tex=8.286x2.786]w70lG1NUs5ZRhKHaXMaifahNYA2l55OVx/YI5vl5IU7qSMjwhJvSCTI+oCa69jESDSO6A9mBBbKInnPehcJ01PvUsR/PpJLYqeJd/LU4cOBewUrgIAu6FKWTc56Mj39r[/tex]，[tex=9.5x3.357]aerUbO+bYxBwvjWm0fqwVQkK6llprVPLSZvwaotYpAvbTTLaGgtQ/t7BK5nWU1jSo/RL7R1DUT25okEc1oTvlN6uGrjiIv+jPYIQ4nv5RTk6DcO8KoU4eI4r/gatkP8r[/tex]求[tex=12.857x1.357]r8z0A9niocXo8NtmZ5hXzf3W97o2oUV+aiW4XWQ8gaqB5f+M5u6m+ot1Rj/G9xnD[/tex]
求序列的[tex=0.5x0.786]C7x+w8+jOPZzxFrGGne6Dw==[/tex]变换,并标明收敛域,绘出零极点图：[tex=12.857x1.357]K9/kWo5hLf3IEWM/q0rC9p5mk6jTTzFrMvMwgZN1/kA=[/tex]
求序列的[tex=0.5x0.786]C7x+w8+jOPZzxFrGGne6Dw==[/tex]变换,并标明收敛域,绘出零极点图：[tex=12.857x1.357]K9/kWo5hLf3IEWM/q0rC9p5mk6jTTzFrMvMwgZN1/kA=[/tex]
利用三重积分计算下列由各组曲面所围成的闭区域的形心:[tex=12.857x1.357]p1tbNzhDzGtiHgDLb+0JAo+8TYuNM9pc9uA5nlGlOCs=[/tex]及[tex=3.929x1.429]eXG42LBlVmCe9OBZMR2NwQ==[/tex].
利用三重积分计算下列由各组曲面所围成的闭区域的形心:[tex=12.857x1.357]p1tbNzhDzGtiHgDLb+0JAo+8TYuNM9pc9uA5nlGlOCs=[/tex]及[tex=3.929x1.429]eXG42LBlVmCe9OBZMR2NwQ==[/tex].
下列结论哪个是错误的 未知类型：{'options': ['[tex=12.857x1.357]EZf45+cjibUM9uOMbnmqH9KDWFy43V83ZOXiIo+o3NdF7yCHuvjfIepGJbPFxxoxL2HLcRNsS58MPuWIsyXEJX7YeFVbvavsErXPa5f+Bww=[/tex]', '[tex=7.5x1.0]hwOkFNlUcO4Z2MQ5MFuYVP50JyvVx33FACKmyfX/F7cBgt14wV/QdC9vMwcnuXPH[/tex]', '[tex=13.5x1.357]INr1x8TP6LHElBa9eMk+NqqjOQ38hQssZe+pbyI2xvhr6VipYysm3LZU4xLacYoHMahG5PRIcCGCRZ8CU8MIWg==[/tex]', '[tex=13.214x2.0]EZf45+cjibUM9uOMbnmqH1DP4525IfstUJ+6/d56JmerD0t7K8lckADDWfJ9pcnYDctPUNHx9IfW740JwH64RF6hwS0buC8r0Dp1ThAFKLw=[/tex]'], 'type': 102}
下列结论哪个是错误的 未知类型：{'options': ['[tex=12.857x1.357]EZf45+cjibUM9uOMbnmqH9KDWFy43V83ZOXiIo+o3NdF7yCHuvjfIepGJbPFxxoxL2HLcRNsS58MPuWIsyXEJX7YeFVbvavsErXPa5f+Bww=[/tex]', '[tex=7.5x1.0]hwOkFNlUcO4Z2MQ5MFuYVP50JyvVx33FACKmyfX/F7cBgt14wV/QdC9vMwcnuXPH[/tex]', '[tex=13.5x1.357]INr1x8TP6LHElBa9eMk+NqqjOQ38hQssZe+pbyI2xvhr6VipYysm3LZU4xLacYoHMahG5PRIcCGCRZ8CU8MIWg==[/tex]', '[tex=13.214x2.0]EZf45+cjibUM9uOMbnmqH1DP4525IfstUJ+6/d56JmerD0t7K8lckADDWfJ9pcnYDctPUNHx9IfW740JwH64RF6hwS0buC8r0Dp1ThAFKLw=[/tex]'], 'type': 102}
判断下列平面点集中哪些是开集、闭集、有界集、区域？ 并分别指出它们的聚点与界点：[tex=12.857x1.357]3ZM1NAGcTaMU3/rf9FXRW7BhLX+1UAAlq/kthOJbXbmA/pQHqzwQGAt3m4sbfjFo[/tex]
判断下列平面点集中哪些是开集、闭集、有界集、区域？ 并分别指出它们的聚点与界点：[tex=12.857x1.357]3ZM1NAGcTaMU3/rf9FXRW7BhLX+1UAAlq/kthOJbXbmA/pQHqzwQGAt3m4sbfjFo[/tex]
证明下列逻辑等价式，其中[tex=0.571x0.786]c5VsltFnl9nO0qB/vNKOWA==[/tex]在[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]中不作为自由变元出现。假设论域非空。[tex=12.857x1.357]Zbfc5UR62OLVTlq6XA/NnRzbC1TTRHnMT2GW1hXLtRK2/qweoPeCVLgd5yegLTpfTmpdYm8VZnTHRjit3tA1yA==[/tex]
证明下列逻辑等价式，其中[tex=0.571x0.786]c5VsltFnl9nO0qB/vNKOWA==[/tex]在[tex=0.786x1.0]Yn3GgEZev6SOu2r4v1WnCw==[/tex]中不作为自由变元出现。假设论域非空。[tex=12.857x1.357]Zbfc5UR62OLVTlq6XA/NnRzbC1TTRHnMT2GW1hXLtRK2/qweoPeCVLgd5yegLTpfTmpdYm8VZnTHRjit3tA1yA==[/tex]