diff --git a/fmmd_concept/fmmd_concept.tex b/fmmd_concept/fmmd_concept.tex
index 2cd8c16..2c277e7 100644
--- a/fmmd_concept/fmmd_concept.tex
+++ b/fmmd_concept/fmmd_concept.tex
@@ -1245,3 +1245,5 @@ using a common notation.
 The author believes it addresses many short comings in current static failure mode analysis methodologies.
 \vspace{60pt}
 \today
+
+%% $$\frac{-b\pm\sqrt{ {b^2-4ac}}}{2a}$$
diff --git a/fmmd_design_aide/fmmd_design_aide.tex b/fmmd_design_aide/fmmd_design_aide.tex
index 82eda62..7b5d550 100644
--- a/fmmd_design_aide/fmmd_design_aide.tex
+++ b/fmmd_design_aide/fmmd_design_aide.tex
@@ -517,7 +517,7 @@ The meanings of and values assigned to its co-efficients are described in table
 \end{equation}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% Low SIL assessment MAX3053
+% SIL assessment 8 PIN GENERAL OP-AMP
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  
 \begin{table}[ht]
@@ -527,7 +527,7 @@ The meanings of and values assigned to its co-efficients are described in table
 \hline \hline
  \em{Parameter}      &  \em{Value}    &   \em{Comments} \\
                      &                &      \\ \hline \hline
- $C_1$     &  0.040    &   $300 \ge 1000$ 1001 BiCMOS transistors (1214) \\ \hline
+ $C_1$     &  0.040    &   $300 \ge 1000$  BiCMOS transistors \\ \hline
  ${\pi}_T$ &  1.4         & max temp of $60^o$ C\\ \hline
  $C_2$     &  0.0026   &  number of functional pins(8) \\ \hline
  ${\pi}_E$ &  2.0         & ground fixed environment (not benign)\\ \hline
@@ -540,7 +540,6 @@ The meanings of and values assigned to its co-efficients are described in table
 \end{table} 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-% END OF Low SIL assessment MAX3053
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 Taking these parameters and applying equation \ref{microcircuitfit},
@@ -552,7 +551,7 @@ failures per Billion (${10}^9$) hours of operation} of 1.
 \subsection{Switching Transistor}
 
 The switching transistor will be operating at a low frequency
-and well within  50\% of it maximum voltage.
+and well within  50\% of its maximum voltage.
 MIL-HDBK-217F\cite{mil1992}[6-25]  gives an exmaple
 transistor in these environmental conditions, and assigns an FIT value of 11.