[spec] further notes on sample means and consecutive sampling

diff --git a/spec/spec-collated.tex b/spec/spec-collated.tex
index d75883f103baa7a1614cb5b81448bc2ec37ba7fa..63d724dd94af056e9530db74371218f8dc936883 100644 (file)
--- a/spec/spec-collated.tex
+++ b/spec/spec-collated.tex
@@ -12,6 +12,7 @@
 \usepackage{graphicx}
 \usepackage{wrapfig}
 \usepackage{tikz}
+\usepackage{tkz-fct}
 \usepackage{tikz-3dplot}
 \usepackage{pgfplots}
 \usetikzlibrary{calc}
@@ -752,8 +753,8 @@
                   \begin{tikzpicture}
                     \begin{axis}[yticklabel style={yshift=1.0pt, anchor=north east},x=0.1cm, y=1cm, ymax=2, ymin=-2, xticklabels={}, ytick={-1.5708,1.5708},yticklabels={\(-\frac{\pi}{2}\),\(\frac{\pi}{2}\)}]
                       \addplot[color=orange, smooth] gnuplot [domain=-35:35, unbounded coords=jump,samples=350] {atan(x)} node [pos=0.5, above left] {\(\tan^{-1}x\)};
-                      \addplot[->, gray, dotted, thick, domain=-35:35] {1.5708};
-                      \addplot[->, gray, dotted, thick, domain=-35:35] {-1.5708};
+                      \addplot[gray, dotted, thick, domain=-35:35] {1.5708} node [black, font=\footnotesize, below right, pos=0] {\(y=\frac{\pi}{2}\)};
+                      \addplot[gray, dotted, thick, domain=-35:35] {-1.5708} node [black, font=\footnotesize, above left, pos=1] {\(y=-\frac{\pi}{2}\)};
                     \end{axis}
                   \end{tikzpicture}
 \columnbreak