// Numbas version: exam_results_page_options {"name": "How to substitute randomised raw LaTeX into question text", "extensions": [], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"variablesTest": {"maxRuns": 100, "condition": ""}, "rulesets": {}, "variables": {"a": {"group": "Ungrouped variables", "definition": "\"x\"", "description": "", "templateType": "anything", "name": "a"}}, "functions": {}, "metadata": {"licence": "Creative Commons Attribution 4.0 International", "description": "

A table showing how to substitute raw LaTeX code into question text.

NOTE: You probably don't want to do this! There's usually a more robust way, where you get Numbas to make the expression for you.

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In the following, the variable a has the value \"x\"

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n

Code	Display	Explanation
$\\simplify{ {a} }$	$\\simplify{ {a} }$	`a` is a string, so set in \\textrm
$\\var{a}$	$\\var{a}$	`a` is a string, so set in \\textrm
${a}$	${a}$	No substitution - this is plain LaTeX
`{a}`	{a}	Substituted in plain text, not LaTeX
$\\simplify{ {latex(a)} }$	$\\simplify{ {latex(a)} }$	`\\simplify` can't have bits of stray LaTeX inside it since it needs to rearrange the expression, so the `latex()` function is ignored.
$\\var{latex(a)}$	$\\var{latex(a)}$	The `latex()` function marks the string as raw LaTeX code
${latex(a)}$	${latex(a)}$	No substitution - this is plain LaTeX
`{latex(a)}`	{latex(a)}	Substituted in plain text, not LaTeX
$\\simplify{{a_undefined}}$	$\\simplify{{a_undefined}}$	The variable `a_undefined` is not defined, so the name is rendered as-is without substitution.
$\\var{a_undefined}$	$\\var{a_undefined}$	The variable `a_undefined` is not defined, so the name is rendered as-is without substitution.
$\\var{latex(a_undefined)}$	Math Processing Error	The `latex()` function expects a string, not an unbound variable name, so fails.
`{a_undefined}`	{a_undefined}	The variable `a_undefined` is not defined, so the name is rendered as-is without substitution.

", "parts": [], "extensions": [], "type": "question", "variable_groups": [], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}]}