Matrix

Description

This question type lays out an n × m matrix of text fields, each of which accepts a number or formula.

Notes

Examples

\begin{question}{Matrix}
\qutext{Find the transpose of the matrix
$$A=\left[\begin{array}{ccc} 1 & 2 & 3\\ 0 & 1 & -2\end{array}\right]$$}
% Give the number of rows of the answer first, then the number of 
columns:
\size{3}{2}
% Use a comma-separated list, starting with the first row:
\answer{1,  0,
        2,  1,
        3, -2}
% Introducing some formatting in the answer as above will make it easier
% for the author to read, but it is not necessary.
\end{question}
\begin{question}{Matrix}
% This question uses algorithmic variables.
\qutext{Find the transpose of the matrix
$$A=\left[\begin{array}{ccc} \var{a} & \var{b} & \var{c}\\
\var{d} & \var{e} & \var{f}\end{array}\right]$$}
\size{3}{2}
\answer{\var{a}, \var{d},
        \var{b}, \var{e},
        \var{c}, \var{f}}
\code{$a = range(-9,9);
      $b = range(-9,9);
      $c = range(-9,9);
      $d = range(-9,9);
      $e = range(-9,9);
      $f = range(-9,9);}
% The above code chooses six random integer coefficients a, b, c, d, e,
% and f, between -9 and 9.
\end{question}