--- loncom/html/adm/help/tex/Math_Response_Problems.tex	2012/08/06 22:01:24	1.3
+++ loncom/html/adm/help/tex/Math_Response_Problems.tex	2017/01/23 20:29:42	1.5
@@ -1,84 +1,7 @@
-\label{Math_Response_Problems}
-Math Response is a way to have a problem graded based on an algorithm that is executed inside of a computer algebra system. 
-It is extremely powerful, as it tests answers for conditions rather than agreement with a particular correct answer. An unfortunate
-byproduct, however, is that it cannot be analyzed by several of the LON-CAPA statistics tools.
-
-Which computer algebra system is to be used is specified in the cas argument of the mathresponse tag; currently, only Maxima is available.
-LON-CAPA sets up two arrays inside the computer algebra system: RESPONSE and LONCAPALIST. RESPONSE contains the student input by component, for example, if "3,42,17" is entered, RESPONSE[2] would be 42. LONCAPALIST contains the arguments passed in the args of mathresponse.
-
-The answerdisplay is what is displayed when the problem is in "Show Answer" mode.
-
-The following example illustrates this.
-\begin{verbatim}
-<problem>
-  <script type="loncapa/perl">
-$a1 = random(-6,6,4);
-$a2 = random(-6,6,4);
-$n1 = random(3,11,2);
-$n2 = random(2,10,2);
-$function = "$a1*cos($n1*x)+$a2*sin($n2*x)";
-$example=&xmlparse('An example would be <m eval="on">$(sin($n1\cdot x)+cos($n2\cdot x))/\sqrt{2}$</m>');
-  </script>
-
-<startouttext />
-  Give an example of a function
-  <ol>
-    <li>
-        which is orthogonal to <algebra>$function</algebra> with respect to the
-        scalar product
-        <m>
-           \[<g \mid h> =
-               \frac{1}{\pi} \int_{-\pi}^{\pi}dx g(x) \cdot h(x)\]
-        </m>
-    </li>
-    <li>
-        whose norm is 1.
-    </li>
-  </ol>
-<endouttext />
-
-<mathresponse answerdisplay="$example" cas="maxima" args="$function">
-    <answer>
-overlap:integrate((RESPONSE[1])*(LONCAPALIST[1]),x,-%pi,%pi)/%pi;
-norm:integrate((RESPONSE[1])*(RESPONSE[1]),x,-%pi,%pi)/%pi;
-is(overlap=0 and norm=1);
-    </answer>
-    <textline readonly="no" size="50" />
-    <hintgroup showoncorrect="no">
-        <mathhint name="ortho" args="$function" cas="maxima">
-            <answer>
-overlap: integrate((LONCAPALIST[1])*(RESPONSE[1]),x,-%pi,%pi)/%pi;
-is(not overlap = 0);
-            </answer>
-        </mathhint>
-        <mathhint name="norm" args="$function" cas="maxima">
-            <answer>
-norm: integrate((RESPONSE[1])*(RESPONSE[1]),x,-%pi,%pi)/%pi;
-is(not norm = 1);
-            </answer>
-        </mathhint>
-        <hintpart on="norm">
-           <startouttext />
-The function you have provided does not have a norm of one.
-           <endouttext />
-        </hintpart>
-        <hintpart on="ortho">
-            <startouttext />
-The function you have provided is not orthogonal.
-            <endouttext />
-        </hintpart>
-    </hintgroup>
-</mathresponse>
+\label{Math_Response_Problems}\index{Math Response}
 
+Math Response is a way to have a problem graded based on an algorithm that is executed inside of a 
+computer algebra system based on an algorithm written by the problem author. It is extremely powerful, 
+as it tests answers for conditions rather than agreement with a particular correct answer. An unfortunate
+byproduct, however, is that it cannot be analyzed by several of the LON-CAPA statistics tools.
 
-<postanswerdate>
-    <startouttext />
-        <p>
-Note that with respect to the above norm, <m>$\cos(nx)$</m> is perpendicular
-to <m>$\sin(nx)$</m> and perpendicular to <m>$\cos(mx)$</m> for
-<m>$n\ne m$</m>.
-        </p>
-    <endouttext />
-</postanswerdate>
-</problem>
-\end{verbatim}