{"action":"closed","issue":{"url":"https://api.github.com/repos/Khan/khan-exercises/issues/140422","labels_url":"https://api.github.com/repos/Khan/khan-exercises/issues/140422/labels{/name}","comments_url":"https://api.github.com/repos/Khan/khan-exercises/issues/140422/comments","events_url":"https://api.github.com/repos/Khan/khan-exercises/issues/140422/events","html_url":"https://github.com/Khan/khan-exercises/issues/140422","id":24259261,"number":140422,"title":"Scaling vectors - http://sandcastle.kasandbox.org/http://sandchttp://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/a","user":{"login":"KhanBugz","id":924247,"avatar_url":"https://avatars.githubusercontent.com/u/924247?v=3","gravatar_id":"","url":"https://api.github.com/users/KhanBugz","html_url":"https://github.com/KhanBugz","followers_url":"https://api.github.com/users/KhanBugz/followers","following_url":"https://api.github.com/users/KhanBugz/following{/other_user}","gists_url":"https://api.github.com/users/KhanBugz/gists{/gist_id}","starred_url":"https://api.github.com/users/KhanBugz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/KhanBugz/subscriptions","organizations_url":"https://api.github.com/users/KhanBugz/orgs","repos_url":"https://api.github.com/users/KhanBugz/repos","events_url":"https://api.github.com/users/KhanBugz/events{/privacy}","received_events_url":"https://api.github.com/users/KhanBugz/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/ie8","name":"ie8","color":"02e10c"},{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/other","name":"other","color":"e10c02"},{"url":"https://api.github.com/repos/Khan/khan-exercises/labels/xp","name":"xp","color":"ededed"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2013-12-13T17:10:15Z","updated_at":"2015-11-19T20:19:13Z","closed_at":"2015-11-19T20:19:13Z","body":"http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/http://sandcastle.kasandbox.org/\n\n[scaling_vectors.html?seed=144&problem=0](http://sandcastle.kasandbox.org/media/castles/Khan:master/exercises/scaling_vectors.html?seed=144&problem=0&debug&lang=en)\n\n[Answer timeline](http://sandcastle.kasandbox.org/media/castles/Khan:master/exercises/scaling_vectors.html?seed=144&problem=0&debug&lang=en&activity=%5B%5D)\n\n    []\n\nLocale: en\n\nUser hash: 1996971539\n\nMozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; InfoPath.3)\n\nMathJax is loaded, ready, queue length: 0\n\n\n\nstart of log\nloadModule mod /khan-exercises/utils/answer-types.js\nloadModule mod /khan-exercises/utils/tmpl.js\nloadModule mod /khan-exercises/utils/tex.js\nloadModule mod /khan-exercises/utils/jquery.adhesion.js\nloadModule mod /khan-exercises/utils/calculator.js\nloadModule mod /khan-exercises/third_party/MathJax/2.1/MathJax.js?config=KAthJax-9e2776ffe7d2006f16f36d0d55d9464b\nloadScript loading /khan-exercises/third_party/MathJax/2.1/MathJax.js?config=KAthJax-9e2776ffe7d2006f16f36d0d55d9464b\nloadScript loaded /khan-exercises/third_party/MathJax/2.1/MathJax.js?config=KAthJax-9e2776ffe7d2006f16f36d0d55d9464b\nstartTask...\nstartTask got task scaling_vectors\nrenderExerciseTask scaling_vectors\nloading and rendering scaling_vectors\nloadExercise start scaling_vectors.html\nloadExercise got scaling_vectors.html\nloadExercise submod math\nloadModule mod /khan-exercises/utils/math.js\nloadModule mod /khan-exercises/utils/../third_party/raphael.js\nloadExercise submod math-format\nloadModule mod /khan-exercises/utils/math-format.js\nloadModule mod /khan-exercises/utils/expressions.js\nloadExercise submod graphie\nloadModule mod /khan-exercises/utils/graphie.js\nloadModule mod /khan-exercises/utils/kpoint.js\nloadModule mod /khan-exercises/utils/kvector.js\nloadModule mod /khan-exercises/utils/knumber.js\nloadExercise submod answer-types\nloadExercise submod tmpl\nloadExercise submod tex\nloadExercise submod jquery.adhesion\nloadExercise submod calculator\nloadExercise submod /khan-exercises/third_party/MathJax/2.1/MathJax.js?config=KAthJax-9e2776ffe7d2006f16f36d0d55d9464b\nloadExercise finish scaling_vectors.html\nloaded scaling_vectors, now rendering\nstart of makeProblem\nchose problem type and seed for scaling_vectors\ncloned problem\ncloned global elements\nran tmplApply to vars and main elements\nran tmplApply to [id]\nremoved hints from DOM\nevaled inline scripts\nadded inline styles\n(answer-typesLoad not a fn; src undefined)\nrunning tmplLoad\nran tmplLoad\n(texLoad not a fn; src undefined)\n(jquery.adhesionLoad not a fn; src undefined)\n(calculatorLoad not a fn; src undefined)\n(mathLoad not a fn; src undefined)\n(../third_party/raphaelLoad not a fn; src undefined)\n(math-formatLoad not a fn; src undefined)\n(expressionsLoad not a fn; src undefined)\nrunning graphieLoad\nran graphieLoad\nrunning kpointLoad\nran kpointLoad\nrunning kvectorLoad\nran kvectorLoad\n(knumberLoad not a fn; src undefined)\ndone with runModules Load\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (-2 \\vec a)\nMathJax done typesetting (\\large\\red{\\vec e})\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nMathJax done typesetting (\\vec a)\nMathJax done typesetting (\\vec b)\nMathJax done typesetting (\\vec c)\nMathJax done typesetting (\\vec d)\nMathJax done typesetting (\\vec e)\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\ndone with runModules\ndecided on answer type radio\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\nvalidator created\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nloading and rendering scaling_vectors\nloaded scaling_vectors, now rendering\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\nstart of makeProblem\nchose problem type and seed for scaling_vectors\ncloned problem\ncloned global elements\nran tmplApply to vars and main elements\nran tmplApply to [id]\nremoved hints from DOM\nevaled inline scripts\nadded inline styles\n(answer-typesLoad not a fn; src undefined)\nrunning tmplLoad\nran tmplLoad\n(texLoad not a fn; src undefined)\n(jquery.adhesionLoad not a fn; src undefined)\n(calculatorLoad not a fn; src undefined)\n(mathLoad not a fn; src undefined)\n(../third_party/raphaelLoad not a fn; src undefined)\n(math-formatLoad not a fn; src undefined)\n(expressionsLoad not a fn; src undefined)\nrunning graphieLoad\nran graphieLoad\nrunning kpointLoad\nran kpointLoad\nrunning kvectorLoad\nran kvectorLoad\n(knumberLoad not a fn; src undefined)\ndone with runModules Load\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (-2 \\vec a)\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nMathJax done typesetting (\\vec a)\nMathJax done typesetting (\\vec b)\nMathJax done typesetting (\\vec c)\nMathJax done typesetting (\\vec d)\nMathJax done typesetting (\\vec e)\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\ndone with runModules\ndecided on answer type radio\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\nvalidator created\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nloading and rendering scaling_vectors\nloaded scaling_vectors, now rendering\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\nstart of makeProblem\nchose problem type and seed for scaling_vectors\ncloned problem\ncloned global elements\nran tmplApply to vars and main elements\nran tmplApply to [id]\nremoved hints from DOM\nevaled inline scripts\nadded inline styles\n(answer-typesLoad not a fn; src undefined)\nrunning tmplLoad\nran tmplLoad\n(texLoad not a fn; src undefined)\n(jquery.adhesionLoad not a fn; src undefined)\n(calculatorLoad not a fn; src undefined)\n(mathLoad not a fn; src undefined)\n(../third_party/raphaelLoad not a fn; src undefined)\n(math-formatLoad not a fn; src undefined)\n(expressionsLoad not a fn; src undefined)\nrunning graphieLoad\nran graphieLoad\nrunning kpointLoad\nran kpointLoad\nrunning kvectorLoad\nran kvectorLoad\n(knumberLoad not a fn; src undefined)\ndone with runModules Load\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (-\\vec a)\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nMathJax done typesetting (\\vec a)\nMathJax done typesetting (\\vec b)\nMathJax done typesetting (\\vec c)\nMathJax done typesetting (\\vec d)\nMathJax done typesetting (\\vec e)\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\ndone with runModules\ndecided on answer type radio\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\nvalidator created\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nloading and rendering scaling_vectors\nloaded scaling_vectors, now rendering\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\n(answer-typesCleanup not a fn; src undefined)\n(tmplCleanup not a fn; src undefined)\nrunning texCleanup\nran texCleanup\n(jquery.adhesionCleanup not a fn; src undefined)\n(calculatorCleanup not a fn; src undefined)\n(mathCleanup not a fn; src undefined)\n(../third_party/raphaelCleanup not a fn; src undefined)\n(math-formatCleanup not a fn; src undefined)\n(expressionsCleanup not a fn; src undefined)\n(graphieCleanup not a fn; src undefined)\n(kpointCleanup not a fn; src undefined)\n(kvectorCleanup not a fn; src undefined)\n(knumberCleanup not a fn; src undefined)\nstart of makeProblem\nchose problem type and seed for scaling_vectors\ncloned problem\ncloned global elements\nran tmplApply to vars and main elements\nran tmplApply to [id]\nremoved hints from DOM\nevaled inline scripts\nadded inline styles\n(answer-typesLoad not a fn; src undefined)\nrunning tmplLoad\nran tmplLoad\n(texLoad not a fn; src undefined)\n(jquery.adhesionLoad not a fn; src undefined)\n(calculatorLoad not a fn; src undefined)\n(mathLoad not a fn; src undefined)\n(../third_party/raphaelLoad not a fn; src undefined)\n(math-formatLoad not a fn; src undefined)\n(expressionsLoad not a fn; src undefined)\nrunning graphieLoad\nran graphieLoad\nrunning kpointLoad\nran kpointLoad\nrunning kvectorLoad\nran kvectorLoad\n(knumberLoad not a fn; src undefined)\ndone with runModules Load\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (-\\dfrac{1}{2} \\vec a)\nMathJax done typesetting (\\large\\red{\\vec e})\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nMathJax done typesetting (\\vec a)\nMathJax done typesetting (\\vec b)\nMathJax done typesetting (\\vec c)\nMathJax done typesetting (\\vec d)\nMathJax done typesetting (\\vec e)\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\ndone with runModules\ndecided on answer type radio\n(answer-types not a fn; src undefined)\nrunning tmpl\nran tmpl\nrunning tex\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})\nran tex\n(jquery.adhesion not a fn; src undefined)\n(calculator not a fn; src undefined)\n(math not a fn; src undefined)\n(../third_party/raphael not a fn; src undefined)\n(math-format not a fn; src undefined)\n(expressions not a fn; src undefined)\nrunning graphie\nran graphie\n(kpoint not a fn; src undefined)\n(kvector not a fn; src undefined)\n(knumber not a fn; src undefined)\nvalidator created\nMathJax done typesetting (\\large\\pink{\\vec b})\nMathJax done typesetting (\\large\\green{\\vec c})\nMathJax done typesetting (\\large\\purple{\\vec d})\nMathJax done typesetting (\\large\\red{\\vec e})"}}