// Numbas version: finer_feedback_settings
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So $A$ has dimensions $ \\var{n1}&nbsp; \\times&nbsp; \\var{m1}$</p>\n<p style=\"text-align: left;\"></p>\n<p style=\"text-align: left;\"><strong>b)</strong></p>\n<p style=\"text-align: left;\">$$<br/>B=\\var{B}<br/>$$</p>\n<p style=\"text-align: left;\">$B$ has $\\var{n2}$ rows and $\\var{m2}$ columns. So $B$ has dimensions $ \\var{n2}&nbsp; \\times \\var{m2}$</p>\n<p style=\"text-align: left;\">&nbsp;</p>\n<p style=\"text-align: left;\"><strong>c)</strong></p>\n<p style=\"text-align: left;\">$$<br/>C=\\var{C}<br/>$$</p>\n<p style=\"text-align: left;\">$C$ has $\\var{n3}$ rows and $\\var{m3}$ columns. So $C$ has dimensions $ \\var{n3}&nbsp; \\times \\var{m3}$</p>\n<p style=\"text-align: left;\">&nbsp;</p>\n<p style=\"text-align: left;\"><strong>d)</strong></p>\n<p style=\"text-align: left;\">$$<br/>D=\\var{D}<br/>$$</p>\n<p style=\"text-align: left;\">$D$ has $\\var{n4}$ rows and $\\var{m4}$ columns. So $D$ has dimensions $ \\var{n4}&nbsp; \\times \\var{m4}$</p>\n<p style=\"text-align: left;\">&nbsp;</p>\n<p style=\"text-align: left;\"><strong>e)</strong></p>\n<p style=\"text-align: left;\">$$<br/>E=\\var{EE}<br/>$$</p>\n<p style=\"text-align: left;\">$E$ has $\\var{n5}$ rows and $\\var{m5}$ columns. So $E$ has dimensions $ \\var{n5}&nbsp; \\times \\var{m5}$</p>", "rulesets": {}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true, "j": false}, "constants": [], "variables": {"m1": {"name": "m1", "group": "A", "definition": "random(1..2)", "description": "", "templateType": "anything", "can_override": false}, "A": {"name": "A", "group": "A", "definition": "transpose(matrix(repeat(repeat(random(-9..9),n1),m1)))", "description": "", "templateType": "anything", "can_override": false}, "n2": {"name": "n2", "group": "B", "definition": "random(2..4)", "description": "", "templateType": "anything", "can_override": false}, "m2": {"name": "m2", "group": "B", "definition": "random(2..4)", "description": "", "templateType": "anything", "can_override": false}, "B": {"name": "B", "group": "B", "definition": "transpose(matrix(repeat(repeat(random(-9..9),n2),m2)))", "description": "", "templateType": "anything", "can_override": false}, "n3": {"name": "n3", "group": "C", 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