diff --git a/Claudio_Maggioni_2/Claudio_Maggioni_2.pdf b/Claudio_Maggioni_2/Claudio_Maggioni_2.pdf
index 4a61d6c..5185e2c 100644
Binary files a/Claudio_Maggioni_2/Claudio_Maggioni_2.pdf and b/Claudio_Maggioni_2/Claudio_Maggioni_2.pdf differ
diff --git a/Claudio_Maggioni_2/Claudio_Maggioni_2.tex b/Claudio_Maggioni_2/Claudio_Maggioni_2.tex
index 3c0bba5..f90920f 100755
--- a/Claudio_Maggioni_2/Claudio_Maggioni_2.tex
+++ b/Claudio_Maggioni_2/Claudio_Maggioni_2.tex
@@ -1,5 +1,6 @@
 \documentclass{scrartcl}
 \usepackage[utf8]{inputenc}
+\usepackage{float}
 \usepackage{graphicx}
 \usepackage{subcaption}
 \usepackage{amsmath}
@@ -72,6 +73,18 @@ use semilogy) as functions of the iterations.}
 
 The solution of this task can be found in Section 1.5 of the script \texttt{main.m}.
 
+\begin{figure}[H]
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{\textwidth}{\input{obvalues}}
+		\caption{Objective function values w.r.t. iteration number}
+	\end{subfigure}
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{\textwidth}{\input{gnorms}}
+		\caption{Norm of the gradient w.r.t. iteration number \\ (y-axis is log scaled)}
+	\end{subfigure}
+	\caption{Plots for Exercise 1.4.}
+\end{figure}
+
 \subsection{Finally, explain why the Conjugate Gradient method is a Krylov subspace method.}
 
 Because theorem 5.3 holds, which itself holds mainly because of this (5.10, page 106 [127]):
@@ -104,6 +117,26 @@ and plot it with respect to the number of iteration.}
 
 The solution of this task can be found in section 2.3 of the \texttt{main.m} MATLAB script.
 
+\begin{figure}[H]
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{!}{\input{a1}}
+		\caption{First matrix}
+	\end{subfigure}
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{!}{\input{a2}}
+		\caption{Second matrix}
+	\end{subfigure}
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{!}{\input{a3}}
+		\caption{Third matrix}
+	\end{subfigure}
+	\begin{subfigure}{0.5\textwidth}
+		\resizebox{\textwidth}{!}{\input{a4}}
+		\caption{Fourth matrix}
+	\end{subfigure}
+	\caption{Plots of logarithm energy norm of the error per iteration. Minus infinity logarithms not shown in the plot.}
+\end{figure}
+
 \subsection{Comment on the convergence of the method for the different matrices. What can you say observing
 the number of iterations obtained and the number of clusters of the eigenvalues of the related
 matrix?}
diff --git a/Claudio_Maggioni_2/a1.tex b/Claudio_Maggioni_2/a1.tex
new file mode 100644
index 0000000..e0a8cf6
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+++ b/Claudio_Maggioni_2/a1.tex
@@ -0,0 +1,32 @@
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+axis background/.style={fill=white}
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diff --git a/Claudio_Maggioni_2/a2.tex b/Claudio_Maggioni_2/a2.tex
new file mode 100644
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--- /dev/null
+++ b/Claudio_Maggioni_2/a2.tex
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+\addplot [color=black, mark=*, mark options={solid, black}, forget plot]
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diff --git a/Claudio_Maggioni_2/a3.tex b/Claudio_Maggioni_2/a3.tex
new file mode 100644
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+++ b/Claudio_Maggioni_2/a3.tex
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diff --git a/Claudio_Maggioni_2/a4.tex b/Claudio_Maggioni_2/a4.tex
new file mode 100644
index 0000000..8fbdfb3
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+++ b/Claudio_Maggioni_2/a4.tex
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diff --git a/Claudio_Maggioni_2/gnorms.tex b/Claudio_Maggioni_2/gnorms.tex
new file mode 100644
index 0000000..7bf9ef2
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+495	1.4170462377942e-05\\
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+498	2.83409247558248e-06\\
+499	4.26545343219991e-16\\
+};
+\end{axis}
+\end{tikzpicture}%
\ No newline at end of file
diff --git a/Claudio_Maggioni_2/main.m b/Claudio_Maggioni_2/main.m
index 2bff263..c47c300 100644
--- a/Claudio_Maggioni_2/main.m
+++ b/Claudio_Maggioni_2/main.m
@@ -26,11 +26,13 @@ if plots
     plot(0:(size(ys,1)-1), ys);
     sgtitle("Objective function values per iteration");
     axis([-1 500 -inf +inf]);
+    %matlab2tikz('showInfo', false, './obvalues.tex');
 
     figure;
     semilogy(0:(size(gnorms,1)-1), gnorms);
     sgtitle("Log of gradient norm per iteration");
     axis([-1 500 -inf +inf]);
+    %matlab2tikz('showInfo', false, './gnorms.tex');
 end
 %% 2.1 - Matrix definitions
 
@@ -56,12 +58,16 @@ n = 10;
 if plots 
     enl_plot(x1, xs1, A1);
     sgtitle("Log energy norm of the error per iter. (matrix A1)");
+    %matlab2tikz('showInfo', false, './a1.tex');
     enl_plot(x2, xs2, A2);
     sgtitle("Log energy norm of the error per iter. (matrix A2)");
+    %matlab2tikz('showInfo', false, './a2.tex');
     enl_plot(x3, xs3, A3)
     sgtitle("Log energy norm of the error per iter. (matrix A3)");
+    %matlab2tikz('showInfo', false, './a3.tex');
     enl_plot(x4, xs4, A4);
     sgtitle("Log energy norm of the error per iter. (matrix A4)");
+    %matlab2tikz('showInfo', false, './a4.tex');
 end
 
 function enl_plot(xsol, xs, A)
diff --git a/Claudio_Maggioni_2/obvalues.tex b/Claudio_Maggioni_2/obvalues.tex
new file mode 100644
index 0000000..9afc965
--- /dev/null
+++ b/Claudio_Maggioni_2/obvalues.tex
@@ -0,0 +1,520 @@
+% This file was created by matlab2tikz.
+%
+\definecolor{mycolor1}{rgb}{0.00000,0.44700,0.74100}%
+%
+\begin{tikzpicture}
+
+\begin{axis}[%
+width=6.028in,
+height=4.754in,
+at={(1.011in,0.642in)},
+scale only axis,
+xmin=-1,
+xmax=500,
+axis background/.style={fill=white}
+]
+\addplot [color=mycolor1, forget plot]
+  table[row sep=crcr]{%
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\ No newline at end of file