// Numbas version: exam_results_page_options
{"name": "MATH6006 CA1 (2018/19) Inverse Trig 6 (Custom Marking)", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"variablesTest": {"condition": "", "maxRuns": 100}, "metadata": {"licence": "None specified", "description": ""}, "tags": [], "name": "MATH6006 CA1 (2018/19) Inverse Trig 6 (Custom Marking)", "statement": "<p>Find $\\frac{dy}{dx}$:</p>", "variables": {}, "variable_groups": [], "rulesets": {}, "functions": {}, "advice": "", "parts": [{"variableReplacements": [], "showCorrectAnswer": true, "variableReplacementStrategy": "originalfirst", "marks": 0, "prompt": "<p>$y=\\sin^{-1} \\left( x^{3/2} \\right)$</p>\n<p></p>\n<p>$\\frac{dy}{dx} = $ [[0]]</p>", "extendBaseMarkingAlgorithm": true, "unitTests": [], "scripts": {}, "gaps": [{"variableReplacements": [], "showCorrectAnswer": true, "checkingType": "absdiff", "marks": "2", "vsetRange": [0, 1], "answer": "3sqrt(x)/(2sqrt(1-x^3))", "checkVariableNames": false, "variableReplacementStrategy": "originalfirst", "extendBaseMarkingAlgorithm": true, "unitTests": [], "scripts": {}, "vsetRangePoints": 5, "showPreview": true, "checkingAccuracy": 0.001, "expectedVariableNames": [], "type": "jme", "showFeedbackIcon": true, "failureRate": 1, "customMarkingAlgorithm": "malrules:\n  [\n    [\"1/(sqrt(1-x^3))\", \"Did you forget to use the chain rule?\"]\n  ]\n\n\nparsed_malrules: \n    map(\n        [\"expr\":parse(x[0]),\"feedback\":x[1]],\n        x,\n        malrules\n    )\n\nagree_malrules (Do the student's answer and the expected answer agree on each of the sets of variable values?):\n    map(\n        len(filter(not x ,x,map(\n            try(\n                resultsEqual(unset(question_definitions,eval(studentexpr,vars)),unset(question_definitions,eval(malrule[\"expr\"],vars)),settings[\"checkingType\"],settings[\"checkingAccuracy\"]),\n                message,\n                false\n            ),\n            vars,\n            vset\n        )))<settings[\"failureRate\"],\n        malrule,\n        parsed_malrules\n    )\n\nmatched_malrules:\n  filter(x[0],x,zip(agree_malrules,parsed_malrules))\n  \nmalrule_feedback:\n    assert(numericallyCorrect,\n        assert(len(matched_malrules)=0,\n            set_credit(0.5,matched_malrules[0][1][\"feedback\"])\n        )\n    )\n\nmark:\n    apply(studentExpr);\n    apply(unexpectedVariables);\n    apply(sameVars);\n    apply(numericallyCorrect);\n    apply(malrule_feedback);\n    apply(failMinLength);\n    apply(failMaxLength);\n    apply(forbiddenStringsPenalty);\n    apply(requiredStringsPenalty)"}], "sortAnswers": false, "type": "gapfill", "showFeedbackIcon": true, "customMarkingAlgorithm": ""}], "preamble": {"css": "", "js": ""}, "extensions": [], "ungrouped_variables": [], "type": "question", "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}]}]}], "contributors": [{"name": "Clodagh Carroll", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/384/"}]}