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File:  [LON-CAPA] / loncom / homework / templates / HintFormula.problem
Revision 1.3: download - view: text, annotated - select for diffs
Tue Jan 23 22:49:34 2007 UTC (18 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: version_2_9_X, version_2_9_1, version_2_9_0, version_2_8_X, version_2_8_99_1, version_2_8_99_0, version_2_8_2, version_2_8_1, version_2_8_0, version_2_7_X, version_2_7_99_1, version_2_7_99_0, version_2_7_1, version_2_7_0, version_2_6_X, version_2_6_99_1, version_2_6_99_0, version_2_6_3, version_2_6_2, version_2_6_1, version_2_6_0, version_2_5_X, version_2_5_99_1, version_2_5_99_0, version_2_5_2, version_2_5_1, version_2_5_0, version_2_4_X, version_2_4_99_0, version_2_4_2, version_2_4_1, version_2_4_0, version_2_3_99_0, bz5969, HEAD, GCI_2, GCI_1, BZ5971-printing-apage, BZ5434-fox
- lack of samples a desired setup (force to use CAS)

<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>
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