Subversion Repositories wimsdev

type=numbers gapfill
textarea="explain"
iEdit="explain"
random="a b c d"
computed="ans"
asis="explain"

:A numerical exercise with 4 random parameters.

The numeric reply is computed with respect to random values of 4 parameters,
according to various formulas.
<p>Author of the model: <a href="mailto:qualite@wimsedu.info">Gang Xiao</a></p>

:%%%%%%%%%%%%%%%%%      ATTENTION      %%%%%%%%%%%%%%%%%%%%

Remove the above header if you destroy the model tags i.e.the lines starting
with a ':'. Otherwise the exercise might not be recognised by Createxo.

:%%%%%%%% Example parameters to be redefined %%%%%%%%%%%%%%%%%

:\title{Four parameters}
:\author{XIAO, Gang}
:\email{qualite@wimsedu.info}
:\credits{}

:First parameter \a.
\real{a=randint(-20..20)}

:Second parameter \b.
\real{b=randint(-20..20)}

:Third parameter \c.
\real{c=randint(-20..20)}

:Fourth parameter \d.
\real{d=randint(-20..20)}

:The computed correct answer.
All common functions are recognized. We use \a, \b, \c, \d to
designate the random parameters defined above.
\real{ans=(\a)*(\d) - (\b)*(\c)}

:Text that explains what should be done.
Note that the syntax \(...) shows a mathematical formula as it should be.
$embraced_randitem
\text{explain=
Compute the determinant of the matrix \([\a,\b;\c,\d]).
}

:Embraced random items
$embraced_randitem
\text{accolade=item(1,1 yes,
2 no)}

:%% Do not modify
\text{accolade=wims(word 1 of \accolade)}
\text{explain=\accolade=1 ?wims(embraced randitem \explain)}

:%%%%%%%%%%%%% Now the statement in html. %%%%%%%%%%%%%%%%%%%%

::You don't need to modify this in general.

\statement{\explain
}

:%%%%%%%%%%%%% Nothing to modify after. %%%%%%%%%%%%%%%%%5

\answer{My reply}{\ans}{type=number}