[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fEwAmFgDV06jCd-LuMQPrh4iY9-rijuO3Gzlf-F9yThI":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-06-24 15:38:54",207618782,[8,9,10,11],"{&lt;a, a&gt;,&lt;b, b&gt;,&lt;c, c&gt;,&lt;d, d&gt;,&lt;a, b&gt;,&lt;b, a&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;b, a&gt;,&lt;d, c&gt;,&lt;a, b&gt;,&lt;c, d&gt;}","{&lt;a, a&gt;,&lt;b, b&gt;,&lt;c, c&gt;,&lt;d, d&gt;}",{"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 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)",[21,33,42,51,57,66,71,80,86,89],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-06-24 15:38:53",207618774,[26,27,28,29],"{&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":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],207618775,[37,38,39,40],"{1,2, 3, 4}","{2, 3, 4}","{2}","{2, 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)",{"answer":43,"createTime":5,"id":44,"options":45,"question":50,"source":31,"type":32},[],207618776,[46,47,48,49],"(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":52,"createTime":5,"id":53,"options":54,"question":56,"source":31,"type":32},[],207618777,[27,28,55,26],"{&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":58,"createTime":5,"id":59,"options":60,"question":65,"source":31,"type":32},[],207618778,[61,62,63,64],"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":67,"createTime":5,"id":68,"options":69,"question":70,"source":31,"type":32},[],207618779,[40,37,38,39],"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":72,"createTime":5,"id":73,"options":74,"question":79,"source":31,"type":32},[],207618780,[75,76,77,78],"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":81,"createTime":5,"id":82,"options":83,"question":85,"source":31,"type":32},[],207618781,[11,9,84,8],"{&lt;a, a&gt;,&lt;b, b&gt;,&lt;a, b&gt;,&lt;c, d&gt;,&lt;b, a&gt;,&lt;d, c&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":87,"createTime":5,"id":6,"options":88,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":90,"createTime":5,"id":91,"options":92,"question":94,"source":31,"type":32},[],207618783,[11,9,93,84],"{&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)"]