oggi testo la tua pazienza
ora questo qui compila
`
\documentclass[ignorenonframetext,fleqn]{beamer}
\usepackage{etoolbox}
\usepackage[beamer]{hf-tikz}
%\usepackage{hf-tikz}
\listfiles
\begin{document}
\begin{frame}
\begin{align}
\tikzmarkin<1->{a1}a_i\tikzmarkend{a1} + b_j = 10 \\
\tikzmarkin<3>{c}c_j + d_j +
\tikzmarkin<2>{b}a_i\tikzmarkend{b}
>= 30\tikzmarkend{c}
\end{align}
\[\tikzmarkin<3>{d}y\tikzmarkend{d}=400\]
\end{frame}
\end{document}
`
ma questo no
`
\documentclass[fleqn]{article}
\usepackage{beamerarticle}
\setjobnamebeamerversion{DocumentoTeX7}
\usepackage{etoolbox}
\usepackage[beamer]{hf-tikz}
%\usepackage{hf-tikz}
\listfiles
\begin{document}
\begin{frame}
\begin{align}
\tikzmarkin<1->{a1}a_i\tikzmarkend{a1} + b_j = 10 \\
\tikzmarkin<3>{c}c_j + d_j +
\tikzmarkin<2>{b}a_i\tikzmarkend{b}
>= 30\tikzmarkend{c}
\end{align}
\[\tikzmarkin<3>{d}y\tikzmarkend{d}=400\]
\end{frame}
\end{document}
`
con questi errori
\..\texlive\2012\..\texmf-local\tex\latex\local\hf-tikz\hf-tikz.sty(151): Errore: Undefined control sequence.
\..\texlive\2012\..\texmf-local\tex\latex\local\hf-tikz\hf-tikz.sty(151): Errore: LaTeX Error: Missing \begin{document}.
uso il mode article per farmi gli appunti 😛
ciao
claudio