// Numbas version: finer_feedback_settings
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"plain", "correctAnswerFraction": false, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "minValue": "{ab31}", "allowFractions": false, "showCorrectAnswer": true, "mustBeReduced": false, "mustBeReducedPC": 0, "showFeedbackIcon": true, "notationStyles": ["plain", "en", "si-en"], "scripts": {}}, {"maxValue": "{ab32}", "type": "numberentry", "marks": 0.5, "correctAnswerStyle": "plain", "correctAnswerFraction": false, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "minValue": "{ab32}", "allowFractions": false, "showCorrectAnswer": true, "mustBeReduced": false, "mustBeReducedPC": 0, "showFeedbackIcon": true, "notationStyles": ["plain", "en", "si-en"], "scripts": {}}, {"maxValue": "{ab33}", "type": "numberentry", "marks": 0.5, "correctAnswerStyle": "plain", "correctAnswerFraction": false, "variableReplacementStrategy": "originalfirst", "variableReplacements": [], "minValue": "{ab33}", "allowFractions": false, "showCorrectAnswer": true, "mustBeReduced": false, "mustBeReducedPC": 0, "showFeedbackIcon": true, "notationStyles": ["plain", "en", "si-en"], "scripts": {}}], "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "prompt": "<p>Let</p>\n<p>\\[A = \\left(\\begin{array}{rrr} \\var{a11} &amp; \\var{a12} &amp; \\var{a13}\\\\ \\var{a21} &amp; \\var{a22} &amp; \\var{a23}\\\\ \\var{a31} &amp; \\var{a32} &amp; \\var{a33}\\\\ \\end{array}\\right),\\;\\;\\;\\; B= \\left(\\begin{array}{rrr} \\var{b11} &amp; \\var{b12} &amp; \\var{b13}\\\\ \\var{b21} &amp; \\var{b22} &amp; \\var{b23}\\\\ \\var{b31} &amp; \\var{b32} &amp; \\var{b33}\\\\ \\end{array}\\right),\\;\\;\\;\\; v= \\left(\\begin{array}{r} \\var{v1}\\\\ \\var{v2} \\\\ \\var{v3} \\end{array}\\right),\\;\\;\\;\\; w= \\left(\\begin{array}{r} \\var{w1}\\\\ \\var{w2} \\\\ \\var{w3} \\end{array}\\right)\\]</p>\n<p>Find the following products:</p>\n<table width=\"715\" height=\"293\">\n<tbody>\n<tr>\n<td rowspan=\"3\" style=\"width: 333px;\">\\[ Av=\\left( \\begin{matrix} \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n<td style=\"width: 37.8px;\">[[0]]</td>\n<td rowspan=\"3\" style=\"width: 295.4px;\">\\[\\left) \\begin{matrix} \\phantom{.} \\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n</tr>\n<tr>\n<td style=\"width: 37.8px;\">[[1]]</td>\n</tr>\n<tr>\n<td style=\"width: 37.8px;\">[[2]]</td>\n</tr>\n<tr>\n<td rowspan=\"3\" style=\"width: 333px;\">\\[ Bw=\\left( \\begin{matrix} \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n<td style=\"width: 37.8px;\">[[3]]</td>\n<td rowspan=\"3\" style=\"width: 295.4px;\">\\[\\left) \\begin{matrix} \\phantom{.} \\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n</tr>\n<tr>\n<td style=\"width: 37.8px;\">[[4]]</td>\n</tr>\n<tr>\n<td style=\"width: 37.8px;\">[[5]]</td>\n</tr>\n</tbody>\n</table>\n<table>\n<tbody>\n<tr>\n<td rowspan=\"3\">\\[BA=\\left( \\begin{matrix} \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n<td>[[6]]</td>\n<td>[[7]]</td>\n<td>[[8]]</td>\n<td rowspan=\"3\">\\[\\left) \\begin{matrix} \\phantom{.} \\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n</tr>\n<tr>\n<td>[[9]]</td>\n<td>[[10]]</td>\n<td>[[11]]</td>\n</tr>\n<tr>\n<td>[[12]]</td>\n<td>[[13]]</td>\n<td>[[14]]</td>\n</tr>\n</tbody>\n</table>\n<table>\n<tbody>\n<tr>\n<td rowspan=\"3\">\\[AB=\\left( \\begin{matrix} \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n<td>[[15]]</td>\n<td>[[16]]</td>\n<td>[[17]]</td>\n<td rowspan=\"3\">\\[\\left) \\begin{matrix} \\phantom{.} \\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\phantom{.}\\\\ \\end{matrix} \\right.\\]</td>\n</tr>\n<tr>\n<td>[[18]]</td>\n<td>[[19]]</td>\n<td>[[20]]</td>\n</tr>\n<tr>\n<td>[[21]]</td>\n<td>[[22]]</td>\n<td>[[23]]</td>\n</tr>\n</tbody>\n</table>", "showFeedbackIcon": true, "showCorrectAnswer": true, "scripts": {}}, {"type": "gapfill", "marks": 0, "gaps": [{"choices": ["<p>$CD$</p>", "<p>$DC$</p>", "<p>$EF$</p>", "<p>$FE$</p>", "<p>$BC$</p>", "<p>$AE$</p>", "<p>$GH$</p>", "<p>$HE$</p>", "<p>$AG$</p>", "<p>$GB$</p>"], "type": "m_n_x", "marks": 0, "displayType": "radiogroup", "answers": ["<strong>Can be calculated</strong>", "<strong>Cannot be calculated</strong>"], "variableReplacementStrategy": "originalfirst", "matrix": "v", "variableReplacements": [], "minAnswers": 0, "showCorrectAnswer": true, "layout": {"type": "all", "expression": ""}, "shuffleChoices": true, "maxMarks": 0, "shuffleAnswers": false, "maxAnswers": 0, "warningType": "none", "showFeedbackIcon": true, "minMarks": 0, "scripts": {}}], "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "prompt": "<p>Consider the following matrices together with the matrices from the first part of the question.</p>\n        <p>\\[\\begin{eqnarray}&amp;C=&amp; \\var{mac},\\;\\;\\;\\; &amp;D=&amp; \\var{mad},\\;\\;\\; \\;&amp;E= &amp;\\var{mae}\\\\&amp;F=&amp; \\left(\\begin{array}{rr} \\var{w1} &amp; \\var{a12}\\\\ \\var{w2} &amp; \\var{b23} \\\\ \\var{w3} &amp; \\var{w2} \\\\\\var{v1} &amp; \\var{b12}\\\\ 0 &amp; \\var{-w2} \\end{array}\\right),\\;\\;\\;\\;&amp;G=&amp;\\var{mag},\\;\\;\\;\\;&amp;H=&amp;\\var{mah} \\end{eqnarray}\\]</p>\n        <p>Which of the following products of matrices can be calculated?</p>\n        <p>[[0]]</p>\n        <p><strong>Please note that for every correct answer you get 0.5 marks and for every incorrect answer 0.5 is taken away. The minimum mark you can get is 0.</strong></p>", "showFeedbackIcon": true, "showCorrectAnswer": true, "scripts": {}}], "type": "question", "contributors": [{"name": "Violeta CIT", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/1030/"}], "resources": []}]}], "contributors": [{"name": "Violeta CIT", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/1030/"}]}