Finish fixing bug 4773

Author: gajennings

OpenProblemLibrary/WHFreeman/Holt_linear_algebra/Chaps_1-4/3.5.36.pg

@@ -78,7 +78,7 @@ where \(0\leq a\leq 1\) and \(0\leq b \leq 1\).
 $PAR
 1) \{$tf->menu()\} True or False: Every 2×2 stochastic matrix has at least one steady-state vector.$PAR
 
-2) If \(A\) has a steady-state vector enter it here.  If it has is no steady-state matrix enter the zero vector.
+2) Assume \(A\neq \begin{bmatrix}1 & 0 \\ 0 & 1\end{bmatrix} \).  If \(A\) has a steady-state vector enter it here.  If it has no steady-state matrix enter the zero vector.
 $BR
 \{display_matrix([[$multians->ans_rule],[$multians->ans_rule]])\}
 END_TEXT