[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fNY9PmcxNhmSZ1dRmbuQM2Vd-oBpn0a5LEyDGDl7Prgg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-24 15:38:53",207618775,[8,9,10,11],"{1,2, 3, 4}","{2, 3, 4}","{2}","{2, 3}",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},10,"53e1d2ef4961cca8eea3e23969ad2cb9","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F03a579384a6dc297c89809b582fcc767.png","默认课程","exam_152512094","平时考六(4.1_4.2_4.3)","设关系R={&lt;1, 2&gt;,&lt;2, 4&gt;,&lt;3, 3&gt;}、S={&lt;1, 3&gt;,&lt;2, 4&gt;,&lt;4, 2&gt;},求dom(R&cap;S)",[21,32,35,45,51,60,65,74,83,89],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],207618774,[25,26,27,28],"{&lt;0, 4&gt;,&lt;3, 3&gt;,&lt;6, 2&gt;,&lt;9, 1&gt;,&lt;12, 0&gt;}","{&lt;12,4&gt;,&lt;3,3&gt;}","{&lt;0, 4&gt;,&lt;3, 3&gt;,&lt;6, 2&gt;,&lt;9, 1&gt;}","&Oslash;","设R={&lt;x, y&gt;|x, y&isin;N 且x+3y=12},求R∘R","v1",0,{"answer":33,"createTime":5,"id":6,"options":34,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":36,"createTime":37,"id":38,"options":39,"question":44,"source":30,"type":31},[],"2025-06-24 15:38:54",207618776,[40,41,42,43],"(1)(2)(3)","(3)(4)(5)","(1)(3)(5)","(2)(3)","R={&lt;a, a&gt;, &lt;a, b&gt;, &lt;b, a&gt;, &lt;b, b&gt;, &lt;c, c&gt;},则R具备那些特性? (1)自反性(reflexive) (2)反自反性(irreflexive) (3)对称性(symmetric) (4)反对称性(antisymmetric) (5)传递性(transitive)",{"answer":46,"createTime":37,"id":47,"options":48,"question":50,"source":30,"type":31},[],207618777,[26,27,49,25],"{&lt;4, 0&gt;,&lt;3, 3&gt;,&lt;2, 6&gt;,&lt;1, 9&gt;,&lt;0, 12&gt;}","设R={&lt;x, y&gt;|x, y&isin;N 且x+3y=12},求R-1",{"answer":52,"createTime":37,"id":53,"options":54,"question":59,"source":30,"type":31},[],207618778,[55,56,57,58],"R∘S={&lt;1, &alpha;&gt;,&lt;1, &beta;&gt;,&lt;3, &alpha;&gt;}","R∘S ={&lt;2, &alpha;&gt;,&lt;2, &beta;&gt;,&lt;3, &alpha;&gt;}","R∘S ={&lt;1, &alpha;&gt;,&lt;2, &beta;&gt;,&lt;3, &alpha;&gt;}","R∘S ={&lt;1, &beta;&gt;}","设A={1, 2, 3}、B={a, b, c}、C={&alpha;, &beta;},已知R&sube;A&times;B、S&sube;B&times;C,其中R={&lt;1, a&gt;,&lt;1, b&gt;,&lt;2, c&gt;,&lt;3, a&gt;}、S={&lt;a, &alpha;&gt;,&lt;b, &beta;&gt;},用关系矩阵乘法求R∘S",{"answer":61,"createTime":37,"id":62,"options":63,"question":64,"source":30,"type":31},[],207618779,[11,8,9,10],"设关系R={&lt;1, 2&gt;,&lt;2, 4&gt;,&lt;3, 3&gt;}、S={&lt;1, 3&gt;,&lt;2, 4&gt;,&lt;4, 2&gt;},求ran(R&cup;S)",{"answer":66,"createTime":37,"id":67,"options":68,"question":73,"source":30,"type":31},[],207618780,[69,70,71,72],"R&oplus;S ={&lt;1, 2&gt;,&lt;3, 2&gt;,&lt;4, 3&gt;}","R&oplus;S ={&lt;2, 1&gt;,&lt;3, 1&gt;,&lt;3, 2&gt;,&lt;4, 2&gt;,&lt;4, 4&gt;}","R&oplus;S={&lt;1, 2&gt;,&lt;3, 3&gt;,&lt;1, 3&gt;,&lt;4, 2&gt;}","R&oplus;S ={&lt;2, 1&gt;,&lt;3, 1&gt;,&lt;4, 1&gt;}","设关系R={&lt;1, 2&gt;,&lt;2, 4&gt;,&lt;3, 3&gt;}、S={&lt;1, 3&gt;,&lt;2, 4&gt;,&lt;4, 2&gt;},求R&oplus;S",{"answer":75,"createTime":37,"id":76,"options":77,"question":82,"source":30,"type":31},[],207618781,[78,79,80,81],"{&lt;a, a&gt;,&lt;b, b&gt;,&lt;c, c&gt;,&lt;d, d&gt;}","{&lt;a, a&gt;,&lt;b, b&gt;,&lt;c, c&gt;,&lt;d, d&gt;,&lt;a, b&gt;,&lt;c, d&gt;}","{&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;,&lt;b, a&gt;,&lt;d, c&gt;}","{&lt;a, a&gt;,&lt;b, b&gt;,&lt;c, c&gt;,&lt;d, d&gt;,&lt;a, b&gt;,&lt;b, a&gt;}","设 A={a, b, c, d},R是集合A上的二元关系,其中R={&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;},求s(R)",{"answer":84,"createTime":37,"id":85,"options":86,"question":88,"source":30,"type":31},[],207618782,[81,79,87,78],"{&lt;a, a&gt;,&lt;b, b&gt;,&lt;b, a&gt;,&lt;d, c&gt;,&lt;a, b&gt;,&lt;c, d&gt;}","设 A={a, b, c, d},R是集合A上的二元关系,其中R={&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;},求r(R)",{"answer":90,"createTime":37,"id":91,"options":92,"question":94,"source":30,"type":31},[],207618783,[78,79,93,80],"{&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;}","设 A={a, b, c, d},R是集合A上的二元关系,其中R={&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;},求t(R)"]