# Question:Multiple answers in Matrix type questions

## Question:Multiple answers in Matrix type questions

Hi

I'm currently trying to write a matrix question. My problem is that the answer can take to forms. I can use a maple graded question to exect both answers but am having trouble when it comes to using a 'matrix; type question. It there a way to get the matrix question to accep the both answers or has it got to be done with a maple graded question.

Regards

Jim

ps below is the text file it needs to saved and then uploaded.

qu.env.validTest=

false

@
qu.1.topic=<b>Project Extra</b><br@

qu.1.1.mode=Matrix@
qu.1.1.name=<b>Application of eigenvalues and eigenvectors</b>@
qu.1.1.editing=useHTML@
qu.1.1.algorithm=\$a=int(rand(2,2));
\$b=int(rand(3,3));
\$c=int(rand(3,3));
\$d=int(rand(2,2));
\$det= int((\$a * \$d) - (\$b * \$c));
condition: ne(\$det, 0);\$M = maple("Matrix([[\$a,\$b],[\$c,\$d]])");\$eigvec = maple("LinearAlgebra[Eigenvectors](\$M)");\$p = ("(\$eigvec)[2]");\$Pin = maple("LinearAlgebra[MatrixInverse](\$p)");\$mp=maple("LinearAlgebra[Multiply](\$M,\$p)");\$prod=maple("LinearAlgebra[Multiply](\$Pin,\$mp)");\$e12 = maple("(\$prod)[1,2]");\$e21= maple("(\$prod)[2,1]");\$e22 = maple("(\$prod)[2,2]");\$e11 =
maple("(\$prod)[1,1]");@
qu.1.1.size=2,2@
qu.1.1.question=
<font color="blue" size="3"><b><big>Learning Objective - To understand the
relationship between a matrix and it's inverse</big><hr color="000000" noshade="noshade" size="2" width="100%"></b><font face="lucida sans unicode" size="2" color="black">
<br>Obtain the modal matrix P and Calculate the product P<sup>-1</sup>x A x P

<br><br> where
A =  [itex]
<mrow>
<mo fence="true">(</mo>
<mtable>
<mtr><mtd><mn>\$a</mn></mtd><mtd><mn>\$b</mn></mtd></mtr>
<mtr><mtd><mn>\$c</mn></mtd><mtd><mn>\$d</mn></mtd></mtr>
</mtable>
<mo fence="true">)</mo>
</mrow>
[/itex]