When Importing a latex file in Texmacs the \boxed command is not recognised and is left as is in the picture
The latex code snippet:
\documentclass[a4paper,11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{amsmath,amsfonts,amssymb}
\usepackage{mathtools}
\usepackage{geometry}
\usepackage[italian]{babel}
\usepackage{hyperref}
\geometry{margin=2.5cm}
\newcommand{\ds}{\displaystyle}
\Longrightarrow
\;C_1=\dfrac13,\;
C_2=-\dfrac32,\;
C_3=\dfrac{46}{15}.
\]
\[
\boxed{\;y[k]=\frac13-\frac32(-3)^k+\frac{46}{15}(-2)^k+\frac1{10}3^{\,k}\;}
\]
La risposta forzata (condizioni iniziali nulle) coincide con
il solo termine particolare:
\[
\boxed{\;y_f[k]=\frac1{10}\,3^{\,k}\;}
\]
\bigskip
\subsection*{Soluzione Esercizio 3}
, thank you lots!