4
Like this:
To each tikzpicture you need to add baseline=(current bounding box.center), option, or as is done beside some tiny code improvements in MWE below, define common \tikzset for both pictures:
\documentclass[table]{beamer}
\usetheme{Boadilla}
\usepackage{booktabs, makecell, tabularx}
\usepackage{amsmath}
\usepackage{tikz}
\usetikzlibrary{arrows.meta,...
2
Your example can be simplified to
\documentclass{article}
\usepackage{fouriernc}
\usepackage{lmodern}
\begin{document}
$a+b$
\end{document}
This shows a missing + and the log reports
Missing character: There is no � in font lmsy10!
Your preamble file loads multiple obsolete and conflicting packages, in particular it specifies the document font setup in ...
2
You can do it with an array.
I show two realizations, in the second one the top row is globally centered with respect to the derivations below. Take your pick, I'd prefer the latter.
\documentclass{article}
\usepackage{amsmath,array}
\begin{document}
\begin{equation*}
\setlength{\arraycolsep}{0pt}
\renewcommand{\arraystretch}{2.4}
\begin{array}{
>{\...
1
Here is one version, where the single numbers (not rounded from square roots) are aligned after the =. Using one of the commented lines instead will yield them centered or left-aligned. Take your pick.
\documentclass{article}
\usepackage{geometry}
\usepackage{amsmath}
% \usepackage{amsfonts} loaded by amssymb
\usepackage{amssymb}
\usepackage{array} % for \...
1
Like this?
With use of the array package:
\documentclass{article}
\usepackage{nccmath, amssymb}
\usepackage{array,booktabs}
\NewExpandableDocumentCommand\mcc{O{1}m}
{\multicolumn{#1}{c}{#2}}
\begin{document}
\[\setlength\arraycolsep{1pt}
\begin{array}{@{\ } c@{\quad} rl c@{\quad}c rl c@{\quad}c rl c@{\quad}c rl @{\ }}
\toprule
x & \...
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