// Numbas version: finer_feedback_settings
{"name": "2.6.6 Circle inequality", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "2.6.6 Circle inequality", "tags": [], "metadata": {"description": "<p>Given one or two circles centre (0,0) describe the region given by the circle inequality ( or inequalitites). e.g. x^2+y^2 &lt; 4</p>", "licence": "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International"}, "statement": "<p>Describe this region in words:</p>\n<p><span data-jme-visible=\"idx &lt;&gt; 1\">$\\var{eqn1}\\;$</span> <span data-jme-visible=\"idx=2\">and</span> <span data-jme-visible=\"idx&lt;&gt;0\">$\\;\\var{eqn2}$</span></p>", "advice": "<p><span data-jme-visible=\"idx=0\">This is the region outside the circle centred at the origin with radius $\\var{radius1}$.</span></p>\n<p><span data-jme-visible=\"idx=1\">This is the region inside the circle centred at the origin with radius $\\var{radius2}$. This region is referred to as a disc.</span></p>\n<p><span data-jme-visible=\"idx=2\">This is the annular ring between the circles centred at the origin with radii $\\var{radius1}$ and $\\var{radius2}$.</span></p>", "rulesets": {}, "extensions": [], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true}, "constants": [], "variables": {"radius1": {"name": "radius1", "group": "The circle", "definition": "random(1..4)", "description": "", "templateType": "anything", "can_override": false}, "radius2": {"name": "radius2", "group": "The circle", "definition": "random(5..9)", "description": "", "templateType": "anything", "can_override": false}, "idx": {"name": "idx", "group": "The circle", "definition": "random(0..2)", "description": "<p>Selector.</p>\n<p>0 =&gt; 1 circle, &gt;</p>\n<p>1 =&gt; 1 circle, &lt;</p>\n<p>2 =&gt; 2 circles.</p>", "templateType": "anything", "can_override": false}, "eqn1": {"name": "eqn1", "group": "The circle", "definition": "simplify(expression(\"x^2 + y^2 > \" + radius1*radius1),\"all\")", "description": "", "templateType": "anything", "can_override": false}, "eqn2": {"name": "eqn2", "group": "The circle", "definition": "simplify(expression(\"x^2 + y^2 < \" + radius2*radius2),\"all\")", "description": "", "templateType": "anything", "can_override": false}, "centrex": {"name": "centrex", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "centrey": {"name": "centrey", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "incolor": {"name": "incolor", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "outcolor": {"name": "outcolor", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "radius": {"name": "radius", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "xmax": {"name": "xmax", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "xmin": {"name": "xmin", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "ymax": {"name": "ymax", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}, "ymin": {"name": "ymin", "group": "Ungrouped variables", "definition": "", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["centrex", "centrey", "incolor", "outcolor", "radius", "xmax", "xmin", "ymax", "ymin"], "variable_groups": [{"name": "The circle", "variables": ["radius1", "radius2", "idx", "eqn1", "eqn2"]}, {"name": "The graph", "variables": []}], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "information", "useCustomName": false, "customName": "", "marks": 0, "scripts": {}, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "type": "question", "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}]}], "contributors": [{"name": "Merryn Horrocks", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/4052/"}]}