# [LON-CAPA-users] formula response or maxima response example requested

Jay Sullivan lon-capa-users@mail.lon-capa.org
Thu, 29 Nov 2007 12:45:13 -0500

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Hi Folks,

I'm looking for an example of a specific type of formula response (or maxima

What I would like a student to do is to enter a polynomial function.
However, I want to be sure that they have entered it in expanded form (i.e.
_not_ as a product of factors). I know that formula response will accept
either as correct since the test function matches the input function in
either case.

Here is a specific example, to clarify:

Find a polynomial of least degree having only real coefficients, with *zeros
-3,-2,-1,1,2,3* and with *f(0) = -36*.

Using a loncapa formula response either of the answers below are graded as
correct:

(x+3)(x+2)(x-1)(x-2)(x-3)   OR   x^6 -14*x^4 +49*x^2 -36

I would like to be able to require that students explicitly enter the second
version. I'm guessing there is a way to
do this with maxima? I'd rather not use a string response.

Thanks for any tips or related examples......
Jay

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Hi Folks,<br><br>I&#39;m looking for an example of a specific type of formula response (or maxima graded response).<br><br>What I would like a student to do is to enter a polynomial function. However, I want to be sure that they have entered it in expanded form (
i.e. _not_ as a product of factors). I know that formula response will accept either as correct since the test function matches the input function in either case.<br><br>Here is a specific example, to clarify:<br><br><a name="10">

Find a polynomial of least degree having only real coefficients, with <b>zeros -3,-2,-1,1,2,3</b> and with <b>f(0) = -36</b>.<br><br>Using a loncapa formula response either of the answers below are graded as correct:<br>
<br>(x+3)(x+2)(x-1)(x-2)(x-3)&nbsp;&nbsp; OR&nbsp;&nbsp; x^6 -14*x^4 +49*x^2 -36<br><br>I would like to be able to require that students explicitly enter the second version. I&#39;m guessing there is a way to <br>do this with maxima? I&#39;d rather not use a string response.
<br><br></a>Thanks for any tips or related examples......<br>Jay<br><br>

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