// Numbas version: finer_feedback_settings
{"name": "Hussam's copy of Hussam's copy of Hussam's copy of How to enter algebraic expressions - Getting Started", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"advice": "", "metadata": {"notes": "", "licence": "Creative Commons Attribution 4.0 International", "description": "<p>Inputting algebraic expressions into Numbas.</p>"}, "tags": ["algebraic expressions", "checked2015", "input", "introduction", "notation", "Numbas", "numbas", "polynomials", "symbols"], "name": "Hussam's copy of Hussam's copy of Hussam's copy of How to enter algebraic expressions - Getting Started", "rulesets": {}, "variable_groups": [], "parts": [{"showCorrectAnswer": true, "prompt": "<p>Inputting polynomials such as $3x^2+5x-2$ is easy : just input <code>3*x^2+5*x-2</code>.</p>\n<p>Try this:</p>\n<p>Input this polynomial: $\\simplify[all]{{a}*x^{b}+{c}*x+{d}}=\\;$[[0]]</p>", "marks": 0, "gaps": [{"showCorrectAnswer": true, "vsetrangepoints": 5, "answersimplification": "all", "marks": 1, "vsetrange": [0, 1], "checkingtype": "absdiff", "answer": "{a}*x^{b}+{c}x+{d}", "checkvariablenames": false, "checkingaccuracy": 0.001, "showpreview": true, "type": "jme", "expectedvariablenames": [], "scripts": {}}], "type": "gapfill", "scripts": {}}, {"showCorrectAnswer": true, "prompt": "<p>Now consider this problem.</p>\n<p>Expand the brackets and input the resulting expression:</p>\n<p>$\\simplify[all]{(x+{a}y)(x+{c}y)}=\\;$[[0]]</p>\n<p>Make sure that you input an expression in your answer such as $xy$ as <code>x*y</code>.</p>\n<p>(Do not include brackets in your answer.)</p>", "marks": 0, "gaps": [{"showCorrectAnswer": true, "vsetrangepoints": 5, "answersimplification": "all", "showpreview": true, "vsetrange": [0, 1], "notallowed": {"message": "<p>Do not include brackets in your answer.</p>", "strings": ["("], "showStrings": false, "partialCredit": 0}, "checkingtype": "absdiff", "answer": "x^2+{a+c}x*y+{a*c}y^2", "checkvariablenames": true, "checkingaccuracy": 0.001, "marks": 1, "type": "jme", "expectedvariablenames": ["x", "y"], "scripts": {}}], "type": "gapfill", "scripts": {}}], "statement": "<p>In this example, we look at how you enter algebraic expressions - those involving symbols.</p>\n<p>The box next to your input shows what you've written in mathematical notation and is very important as you can check it against the expression you had in mind.</p>", "showQuestionGroupNames": false, "variables": {"c": {"name": "c", "templateType": "anything", "definition": "s*random(1..9)", "group": "Ungrouped variables", "description": ""}, "b": {"name": "b", "templateType": "anything", "definition": "random(2..4)", "group": "Ungrouped variables", "description": ""}, "a": {"name": "a", "templateType": "anything", "definition": "random(2..9)", "group": "Ungrouped variables", "description": ""}, "d": {"name": "d", "templateType": "anything", "definition": "random(1..9)", "group": "Ungrouped variables", "description": ""}, "s": {"name": "s", "templateType": "anything", "definition": "random(1,-1)", "group": "Ungrouped variables", "description": ""}}, "functions": {}, "ungrouped_variables": ["a", "s", "b", "c", "d"], "question_groups": [{"questions": [], "name": "", "pickQuestions": 0, "pickingStrategy": "all-ordered"}], "variablesTest": {"condition": "", "maxRuns": 100}, "type": "question", "preamble": {"css": "", "js": ""}, "contributors": [{"name": "Hussam Muhamedsalih", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2515/"}]}]}], "contributors": [{"name": "Hussam Muhamedsalih", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/2515/"}]}