// Numbas version: finer_feedback_settings
{"name": "MATLAB CBA 1 Question 5 (credit: Amy Chadwick)", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"functions": {}, "ungrouped_variables": ["a", "b", "c", "d", "f", "g", "h", "j"], "name": "MATLAB CBA 1 Question 5 (credit: Amy Chadwick)", "tags": [], "preamble": {"css": "", "js": ""}, "advice": "<p>a) $z=x./y$ means that you divide each component of the $x$ vector by the corresponding component of the $y$ vector in order to get $z$.</p>\n<p>e.g. divide the first element of $x$ by the first element of $y$ and so on.</p>\n<p>b) $a=z./z$ so you divide each component of $z$ by itself.</p>", "rulesets": {}, "parts": [{"displayColumns": 0, "prompt": "<p>What is the value of&nbsp;$z$?&nbsp;</p>", "matrix": ["1", 0, 0, "0"], "shuffleChoices": true, "variableReplacements": [], "choices": ["<p>({a/f}, {b/g}, {c/h}, {d/j})</p>", "<p>({a/f}, {b/g}, 0, {d/j})</p>", "<p>({a/f}, {b/h}, {-2}, {d/j})</p>", "<p>{a/g + b/h + c/h + d/j} &nbsp;</p>"], "variableReplacementStrategy": "originalfirst", "maxMarks": "1", "distractors": ["", "", "", ""], "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "1_n_2", "displayType": "radiogroup", "minMarks": 0}, {"displayColumns": 0, "prompt": "<p>What is the value of $a$?</p>", "matrix": [0, "1", 0, 0], "shuffleChoices": true, "variableReplacements": [], "choices": ["<p>({a/f}, {b/g}, {c/h}, {d/j})</p>", "<p>(1, 1, 1, 1)</p>", "<p>4</p>", "<p>(1, 1, {c/h}, 0)</p>"], "variableReplacementStrategy": "originalfirst", "maxMarks": 0, "distractors": ["", "", "", ""], "showCorrectAnswer": true, "scripts": {}, "marks": 0, "type": "1_n_2", "displayType": "radiogroup", "minMarks": 0}], "extensions": [], "statement": "<p>&gt;&gt; x = &nbsp;[{a}, {b}, {c}, {d}] ;<br/>&gt;&gt; y = &nbsp;[{f}, {g}, {h}, {j}] ;<br/>&gt;&gt; z = x./y<br/>&gt;&gt; a = z./z</p>", "variable_groups": [], "variablesTest": {"maxRuns": 100, "condition": ""}, "variables": {"a": {"definition": "random(0..15#1)", "templateType": "randrange", "group": "Ungrouped variables", "name": "a", "description": ""}, "c": {"definition": "random(1..12#1)", "templateType": "randrange", "group": "Ungrouped variables", "name": "c", "description": ""}, "b": {"definition": "random(0..11#1)", "templateType": "randrange", "group": "Ungrouped variables", "name": "b", "description": ""}, "d": {"definition": "random(0..15#1)", "templateType": "randrange", "group": "Ungrouped variables", "name": "d", "description": ""}, "g": {"definition": "random(2..10#2)", "templateType": "randrange", "group": "Ungrouped variables", "name": "g", "description": ""}, "f": {"definition": "random(2..10#2)", "templateType": "randrange", "group": "Ungrouped variables", "name": "f", "description": ""}, "h": {"definition": "random(2..10#2)", "templateType": "randrange", "group": "Ungrouped variables", "name": "h", "description": ""}, "j": {"definition": "random(2..10#2)", "templateType": "randrange", "group": "Ungrouped variables", "name": "j", "description": ""}}, "metadata": {"description": "<p>Question 5 of CBA1; &nbsp;Testing vector operations.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "type": "question", "showQuestionGroupNames": false, "question_groups": [{"name": "", "pickingStrategy": "all-ordered", "pickQuestions": 0, "questions": []}], "contributors": [{"name": "Tim English", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/838/"}]}]}], "contributors": [{"name": "Tim English", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/838/"}]}