no \[ ... \] (to be checked !!!)

Author: wiobber

INDEX/main.tex

@@ -760,12 +760,13 @@ \subsection*{P}
 parametric equation of a line (\ref{form:paramlinend})
 \begin{expandable}{}{}
     Let $\vec{v}=\begin{bmatrix}v_1\\v_2\\\vdots\\v_n\end{bmatrix}$ be a direction vector for line $l$ in $\RR^n$, and let $(a_1, a_2,\ldots , a_n)$ be an arbitrary point on $l$.  Then the following parametric equations describe $l$:
-\[
-x_1=v_1t+a_1\]
-\[x_2=v_2t+a_2\]
-\[\vdots\]
-\[x_n=v_nt+a_n
-\]
+$$x_1=v_1t+a_1$$
+%
+$$x_2=v_2t+a_2$$
+%
+$$\vdots$$
+%
+$$x_n=v_nt+a_n$$
 \end{expandable}
 
 \href{https://ximera.osu.edu/linearalgebradzv3/LinearAlgebraInteractiveIntro/SYS-0050/main}{particular solution}
@@ -824,7 +825,7 @@ \subsection*{P}
 
 % properties of matrix algebra 
 
-\href{https://ximera.osu.edu/linearalgebradzv3/LinearAlgebraInteractiveIntro/RTH-0035/main}{properties of orthogonal matrices)}
+\href{https://ximera.osu.edu/linearalgebradzv3/LinearAlgebraInteractiveIntro/RTH-0035/main}{properties of orthogonal matrices}
 \begin{expandable}{}{}
 If $Q$ is an orthogonal matrix, then...
 \begin{enumerate}

VOCAB_prelim/main.tex

@@ -293,12 +293,10 @@ \section*{Vocabulary and Review Problems}\label{section:VOCAB_prelim}
 
 \begin{expandable}{}{}
     Let $\vec{v}=\begin{bmatrix}v_1\\v_2\\\vdots\\v_n\end{bmatrix}$ be a direction vector for line $l$ in $\RR^n$, and let $(a_1, a_2,\ldots , a_n)$ be an arbitrary point on $l$.  Then the following parametric equations describe $l$:
-\[
-x_1=v_1t+a_1\]
-\[x_2=v_2t+a_2\]
-\[\vdots\]
-\[x_n=v_nt+a_n
-\]
+$$x_1=v_1t+a_1$$
+$$x_2=v_2t+a_2$$
+$$\vdots$$
+$$x_n=v_nt+a_n$$
 \end{expandable}
 
 \begin{tikzpicture}[scale=1]