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* Templates for formula and mathresponse
* Adding documentation to the manual
* stringresponse, etc, are not a subsubsection of "Foils" in author manual

<problem>
<script type="loncapa/perl">
$a1=&random(3,6,1);
$e1=&random(3,6,1);
$a2=&random(6,8,1);
$e2=&random(6,8,1);
$da1=$a1*$e1;
$da2=$a2*$e2;
$de1=$e1-1;
$de2=$e2-1;
@derivative=($da1.'t^'.$de1,$da2.'t^'.$de2);
@wrongderivative=($a1.'t^'.$de1,$a2.'t^'.$de2);
</script>
<startouttext />What is the derivative of
<m eval="on">\[\left(\begin{array}{c}$a1 t^$e1\\ $a2 t^$e2\end{array}\right)\]</m>
with respect to <m>$t$</m>?<endouttext />
<formularesponse answer="@derivative">
<textline readonly="no" size="25" />
<hintgroup showoncorrect="no">
<formulahint answer="@wrongderivative" name="nomulti"></formulahint>
<hintpart on="nomulti">
<startouttext />You need to multiply with the original exponent.<endouttext />
</hintpart>
</hintgroup>
</formularesponse>
</problem>