// Numbas version: exam_results_page_options
{"name": "problema 1 - tema 2 - clase 4", "extensions": [], "custom_part_types": [], "resources": [["question-resources/dibu02.png", "/srv/numbas/media/question-resources/dibu02.png"], ["question-resources/dibu02_nGHrzjg.png", "/srv/numbas/media/question-resources/dibu02_nGHrzjg.png"], ["question-resources/dibu02_jJ5G9ED.png", "/srv/numbas/media/question-resources/dibu02_jJ5G9ED.png"]], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "problema 1 - tema 2 - clase 4", "tags": [], "metadata": {"description": "", "licence": "All rights reserved"}, "statement": "<p>Sea el cuadrado de la figura sometida a un estado de deformaci&oacute;n plana ($\\varepsilon_{13}=\\varepsilon_{23}=\\varepsilon_{33}=0$) homog&eacute;nea.</p>\n<p><img src=\"resources/question-resources/dibu02_jJ5G9ED.png\" width=\"216\" height=\"173\"/></p>\n<p>De esta deformaci&oacute;n se sabe lo siguiente:</p>\n<ul>\n<li>La deformaci&oacute;n volum&eacute;trica vale $\\varepsilon_v=\\var{epsion_v}$</li>\n<li>La variaci&oacute;n angular del &aacute;ngulo ADC vale $\\var{delt_12}$ radianes.</li>\n<li>El alargamiento unitario del lado EC vale $\\varepsilon_{EC}=\\var{eps_chi3}$</li>\n</ul>\n<p>Responde a las siguientes preguntas <em>(usa maple para resolver el sistema de ecuaciones)</em>:</p>", "advice": "", "rulesets": {}, "extensions": [], "variables": {"a_11": {"name": "a_11", "group": "Ungrouped variables", "definition": "random(-5,-4,-3,-2,-1,1,2,3,4,5)", "description": "", "templateType": "anything"}, "a_12": {"name": "a_12", "group": "Ungrouped variables", "definition": "random(-5,-4,-3,-2,-1,1,2,3,4,5)", "description": "", "templateType": "anything"}, "a_22": {"name": "a_22", "group": "Ungrouped variables", "definition": "random(-5,-4,-3,-2,-1,1,2,3,4,5)", "description": "", "templateType": "anything"}, "epsion_v": {"name": "epsion_v", "group": "Ungrouped variables", "definition": "1/1000*a_11 + 1/1000*a_22 ", "description": "", "templateType": "anything"}, "eps_chi3": {"name": "eps_chi3", "group": "Ungrouped variables", "definition": "1/4000*sqrt(3)*(sqrt(3)*a_11 + a_12) + 1/4000*sqrt(3)*a_12 + 1/4000*a_22", "description": "", "templateType": "anything"}, "delt_12": {"name": "delt_12", "group": "Ungrouped variables", "definition": "1/500*a_12", "description": "", "templateType": "anything"}, "delt_45": {"name": "delt_45", "group": "Ungrouped variables", "definition": "-1/2000*sqrt(2)*(sqrt(2)*a_11 - sqrt(2)*a_12) - 1/2000*sqrt(2)*(sqrt(2)*a_12 - sqrt(2)*a_22)", "description": "", "templateType": "anything"}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["a_11", "a_12", "a_22", "epsion_v", "eps_chi3", "delt_12", "delt_45"], "variable_groups": [], "functions": {}, "preamble": {"js": "", "css": ""}, "parts": [{"type": "matrix", "useCustomName": true, "customName": "Cuesti\u00f3n 1.", "marks": "4", "showCorrectAnswer": false, "showFeedbackIcon": false, "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "adaptiveMarkingPenalty": 0, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "prompt": "<p>Introduzca las componentes del tensor de deformaciones infinitesimales en el sistema $\\{x_1,x_2\\}$ (<em>responde las componentes redondeando al tercer decimal</em>)</p>", "correctAnswer": "matrix([ [a_11,a_12,0],[a_12,a_22,0],[0,0,0] ])*(1/1000)", "correctAnswerFractions": false, "numRows": "3", "numColumns": "3", "allowResize": false, "tolerance": 0, "markPerCell": true, "allowFractions": false, "precisionType": "dp", "precision": "3", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false}, {"type": "numberentry", "useCustomName": true, "customName": "Cuesti\u00f3n 2", "marks": 1, "showCorrectAnswer": false, "showFeedbackIcon": false, "scripts": {}, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "adaptiveMarkingPenalty": 0, "customMarkingAlgorithm": "", "extendBaseMarkingAlgorithm": true, "unitTests": [], "prompt": "<p>Escribe la variaci&oacute;n angular del &aacute;ngulo CFB <em>(esponde redondeando al cuarto decimal)</em></p>", "minValue": "{delt_45}", "maxValue": "{delt_45}", "correctAnswerFraction": false, "allowFractions": false, "mustBeReduced": false, "mustBeReducedPC": 0, "precisionType": "dp", "precision": "4", "precisionPartialCredit": 0, "precisionMessage": "You have not given your answer to the correct precision.", "strictPrecision": false, "showPrecisionHint": true, "notationStyles": ["plain", "en", "si-en"], "correctAnswerStyle": "plain"}], "contributors": [{"name": "Sergio Blanco", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2217/"}]}]}], "contributors": [{"name": "Sergio Blanco", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2217/"}]}