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# record 1: header: parent, keywords
# record 2: calling parameters
# record 3: submit buttons
# record 4: html form content
:linear algebra
matrix, determinant, trace, matrix inverse, inverse matrix,
characteristic polynomial
:datatype, matrix
:operation, Determinant
operation, Rank
operation, Trace
operation, Inverse Matrix
operation, Characteristic Polynomial
:<td style="text-align:center;">
$submit1
$submit2
$submit3
$submit4
$submit5
<td> of </td>
<td align="right">
<textarea name="formula" rows="4" cols="30">
1, 2, 3, 4
2, 3, 4, 1
3, 4, 1, 2
4, 1, 2, 3
</textarea>