i have a large matrix that goes of the pdf when compliled. a suggestion to use \resizebox{0.94\textwidth}{!}{%$...$} which i followed but this causes my remaining work to have large vertical spaces in between.
The Matrix cannot be changed and must appear as it is. If you have a suggestion that wouldn't require
\resizebox, it will be greatly appreciated but all the elements of it must appear as it is.
\documentclass[fleqn]{book}
%%CreatedwithwxMaxima22.04.0
\setlength{\parskip}{\medskipamount}
\setlength{\parindent}{0pt}
\usepackage{iftex}
\ifPDFTeX
%PDFLaTeXorLaTeX
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\DeclareUnicodeCharacter{00B5}{\ensuremath{\mu}}
\else
%XeLaTeXorLuaLaTeX
\usepackage{fontspec}
\fi
\usepackage{graphicx}
\usepackage{color}
\usepackage{amsmath,amssymb,mathtools}
\usepackage{grffile}
\usepackage{ifthen}
\newsavebox{\picturebox}
\newlength{\pictureboxwidth}
\newlength{\pictureboxheight}
\newcommand{\HRule}{\rule{\linewidth}{0.5mm}}
\newcommand{\includeimage}[1]{
\savebox{\picturebox}{\includegraphics{#1}}
\settoheight{\pictureboxheight}{\usebox{\picturebox}}
\settowidth{\pictureboxwidth}{\usebox{\picturebox}}
\ifthenelse{\lengthtest{\pictureboxwidth>.95\linewidth}}
{
\includegraphics[width=.95\linewidth,height=.80\textheight,keepaspectratio]{#1}
}
{
\ifthenelse{\lengthtest{\pictureboxheight>.80\textheight}}
{
\includegraphics[width=.95\linewidth,height=.80\textheight,keepaspectratio]{#1}
}
{
\includegraphics{#1}
}
}
}
\newlength{\thislabelwidth}
\DeclareMathOperator{\abs}{abs}
\definecolor{labelcolor}{RGB}{100,0,0}
\begin{document}
{\begin{equation}\label{mat}
\hspace*{-0.5cm}
\renewcommand\arraystretch{2.25}
\medmuskip=0mu
\setlength\arraycolsep{2.5pt} % default: 5pt
\resizebox{1.35\textwidth}{!}{%
$D=\begin{bmatrix}
1 &{x_{n+1}-h} & {\bigg(x_{n+1}-h\bigg)^2} & {\bigg(x_{n+1}-h\bigg)^3} & {\bigg(x_{n+1}-h\bigg)^4} & {\bigg(x_{n+1}-h\bigg)^5} & {\bigg(x_{n+1}-h\bigg)^6} & {\bigg(x_{n+1}-h\bigg)^7} & {\bigg(x_{n+1}-h\bigg)^8} & {\bigg(x_{n+1}-h\bigg)^9}\
0 & 1 & 2 {\bigg(x_{n+1}-h\bigg)} & 3 {\bigg(x_{n+1} -h\bigg)^2} & 4 {\bigg(x_{n+1} -h\bigg)^3} & 5 {\bigg(x_{n+1} -h\bigg)^4} & 6 {\bigg(x_{n+1} -h\bigg)^5} & 7 {\bigg(x_{n+1} -h\bigg)^6} & 8 {\bigg(x_{n+1} -h\bigg)^7} & 9 {\bigg(x_{n+1} -h\bigg)^8}\
0 & 1 & 2 {x_{n+1}} & 3 {x_{n+1}^2} & 4 {x_{n+1}^3} & 5 {x_{n+1}^4} & 6 {x_{n+1}^5} & 7 {x_{n+1}^6} & 8 {x_{n+1}^7} & 9 {x_{n+1}^8}\
0 & 1 & 2{\bigg(x_{n+1}+ \frac{1}{2}h\bigg)} & 3{\bigg(x_{n+1}+ \frac{1}{2}h\bigg)^2} & 4{\bigg(x {n+1}+ \frac{1}{2}h\bigg)^3} & 5{\bigg(x _{n+1}+ \frac{1}{2}h\bigg)^4} & 6{\bigg(x _{n+1}+ \frac{1}{2}h\bigg)^5} & 7{\bigg(x _{n+1}+ \frac{1}{2}h\bigg)^6} & 8{\bigg(x _{n+1}+ \frac{1}{2}h\bigg)^7} & 9{\bigg(x _{n+1}+ \frac{1}{2}h\bigg)^8}\
0 & 1 & 2 {\bigg(x{n+1}+h\bigg)} & 3 {\bigg(x_{n+1} +h\bigg)^2} & 4 {\bigg(x_{n+1} +h\bigg)^3} & 5 {\bigg(x_{n+1} +h\bigg)^4} & 6 {\bigg(x_{n+1} +h\bigg)^5} & 7 {\bigg(x_{n+1} +h\bigg)^6} & 8 {\bigg(x_{n+1} +h\bigg)^7} & 9 {\bigg(x_{n+1} +h\bigg)^8}\
0 & 1 & 2 {\bigg(x {n+1}+ \frac{3}{2}h\bigg)} & 3{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^2} & 4{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^3} & 5{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^4} & 6{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^5} & 7{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^6} & 8{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^7} & 9{\bigg(x _{n+1}+ \frac{3}{2}h\bigg)^8}\
0 & 1 & 2 {\bigg(x{n+1} +2 h\bigg)} & 3 {\bigg(x_{n+1} +2 h\bigg)^2} & 4 {\bigg(x_{n+1} +2 h\bigg)^3} & 5 {\bigg(x_{n+1} +2 h\bigg)^4} & 6 {\bigg(x_{n+1} +2 h\bigg)^5} & 7 {\bigg(x_{n+1} +2 h\bigg)^6} & 8 {\bigg(x_{n+1} +2 h\bigg)^7} & 9 {\bigg(x_{n+1} +2 h\bigg)^8}\
0 & 1 & 2{\bigg(x_{n+1}+\frac{5}{2}h\bigg)} & 3{\bigg(x {n+1}+ \frac{5}{2}h\bigg)^2} & 4{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^3} & 5{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^4} & 6{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^5} & 7{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^6} & 8{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^7} & 9{\bigg(x _{n+1}+ \frac{5}{2}h\bigg)^8}\
0 & 1 & 2 {\bigg(x{n+1}+3h\bigg)} & 3 {\bigg(x_{n+1}+3h\bigg)^2} & 4 {\bigg(x_{n+1}+3h\bigg)^3} & 5 {\bigg(x_{n+1}+3h\bigg)^4} & 6 {\bigg(x_{n+1}+3h\bigg)^5} & 7 {\bigg(x_{n+1}+3h\bigg)^6} & 8 {\bigg(x_{n+1}+3h\bigg)^7} & 9 {\bigg(x_{n+1}+3h\bigg)^8}\
0 & 1 & 2 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)} & 3{\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^2} & 4{\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^3} & 5 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^4} & 6 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^5} & 7 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^6} & 8 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^7} & 9 {\bigg(x _{n+1}+ \frac{7}{2}h\bigg)^8}
\end{bmatrix}$}
\end{equation}
\par}
The determinant of the new $D$ matrix is:
\begin{equation}det (B) =\frac{15380234690625 h}{64}h^{36}\end{equation}
The inverse of {\eqref{mat}} is the $C$ matrix, which is calculated using \textbf{wxMaxima} codes as shown in the \textbf{Appendix}.
Our sole interest in the $C$ matrix is its first row and the elements are:
\end{document}
Also, can i use \hspace*{} or \hspace inside an equation enviroment and how can i use it for only a specific equation.
ps: i am very new at latex, please explanations should be toddler-level. thanks


\bigg. Anoter good idea: replace all 81 [!] instances ofx_{n+1}with, say,y. – Mico May 09 '23 at 18:55\hspaceis a text-mode command. – Mico May 09 '23 at 18:55Dmatrix encased in curly braces? – Mico May 09 '23 at 19:14