$/**$

$*$ accessor: get a transpose of this MathMatrix.

$*$ This Matrix is not changed.

$*$ pre: none

$*$ @return a transpose of this MathMatrix

$*/$

public MathMatrix getTranspose$()\{$

return null;

$\}$

$/**$

$*$ override toString.

$*$ @return a String with all elements of this MathMatrix.

$*$ Each row is on a separate line.

$*$ Spacing based on longest element in this Matrix.

$*/$

public String toString$()\{$

return $""$;

$\}$

$/**$

$*$ Return true if this MathMatrix is upper triangular. To

$*$ be upper triangular all elements below the main

$*$ diagonal must be $0.$

$*$ pre: this is a square matrix. getNumRows$()==$ getNumColumns$()$

$*$ @return true if this MathMatrix is upper triangular,

$*$ false otherwise.

$*/$

public boolean isUpperTriangular$()\{$

return false;

$\}$