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Annotation of loncom/homework/templates/SimpleMathResponse.problem, revision 1.2

1.1       www         1: <problem>
                      2: <script type="loncapa/perl">
                      3: $x = &random(-1,1,2) * &random(1,5,1);
                      4: $y = &random(-1,1,2) * &random(1,3,1);
                      5: @args = ($x, $y);
                      6: $yaa = $y-3*$x;
                      7: if ($yaa > 0) {
                      8:   $yaa = "+" . $yaa;
                      9: } elsif ($yaa == 0) {
                     10:   $yaa = "";
                     11: }
1.2     ! raeburn    12: $example = "3x$yaa is an example for a function having constant slope which passes through the point ($x | $y). The slope is not given explicitly, so there are different possibilities for this function.";
1.1       www        13: </script>
                     14: 
                     15: <startouttext />
                     16: State a function y(x) with constant slope which passes through the point ($x | $y).<br />
                     17: <br />
                     18: y(x) =
                     19: <endouttext />
                     20: 
                     21: <mathresponse answerdisplay="$example" cas="maxima" args="@args">
                     22: 
                     23: <answer>
                     24: y(x):=RESPONSE[1];
                     25: hitspoint:is(abs(y(LONCAPALIST[1]) - LONCAPALIST[2]) <= 0.000000001);
                     26: islinear:is(diff(y(x),x,2) = 0);
                     27: hitspoint and islinear;
                     28: </answer>
                     29: 
                     30: <textline readonly="no" size="50" />
                     31: </mathresponse>
                     32: 
                     33: </problem>
                     34: