From 52e79e75d0c270d28b4fb0ee656ef84117d43f8e Mon Sep 17 00:00:00 2001 From: Tim Hunt Date: Fri, 4 Dec 2009 19:02:14 +0000 Subject: [PATCH] Typo in calculated qtype lang file. --- lang/en_utf8/help/quiz/calculated.html | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lang/en_utf8/help/quiz/calculated.html b/lang/en_utf8/help/quiz/calculated.html index 5f0af8d8f83..6535b043b99 100644 --- a/lang/en_utf8/help/quiz/calculated.html +++ b/lang/en_utf8/help/quiz/calculated.html @@ -49,7 +49,7 @@ In the question text input and "Correct Answer Formula" {a} and {b} can be seen. These and any other {name} can be used as a wildcard that is substituted by some value when the quiz is taken. Also, the correct answer is calculated when the quiz is submitted using the expression in "Correct Answer Formula", which is calculated as a numerical expression after the substitution of the wildcards. The possible wildcard values are set or generated on a later page in "editing wizard" for calculated questions...

The example formula uses the operator +. Other accepted operators are -*/ and % where % is the modulo operator. It is also possible to use some PHP-style mathematical function. Among these there are 24 single-argument function:
-abs, acos, acosh, asin, asinh, atan, atanh, ceil, cos, cosh, deg2rad, exp, expm1, floor, log, log10, log1p, rad2deg, round, sin, sinh, sprt, tan, tanh +abs, acos, acosh, asin, asinh, atan, atanh, ceil, cos, cosh, deg2rad, exp, expm1, floor, log, log10, log1p, rad2deg, round, sin, sinh, sqrt, tan, tanh
and two two-argument functions
atan2, pow
and the functions min and max that can take two or more arguments. It is also possible to use the function pi that takes no arguments but do not forget the use the parentheses - the correct usage is pi(). Similarly the other function must have their argument(s) within parentheses. Possible usage is for example sin({a}) + cos({b}) * 2. It should not be any problem to wrap functions within each other like cos(deg2rad({a} + 90)) etc.