diff --git a/docs/chapter2/img/2.37.png b/docs/chapter2/img/2.37.png
index 0cdfae2..fa3ff66 100644
Binary files a/docs/chapter2/img/2.37.png and b/docs/chapter2/img/2.37.png differ
diff --git a/docs/chapter2/img/2.38.png b/docs/chapter2/img/2.38.png
index e22b11c..f5e745e 100644
Binary files a/docs/chapter2/img/2.38.png and b/docs/chapter2/img/2.38.png differ
diff --git a/docs/chapter2/img/2.39.png b/docs/chapter2/img/2.39.png
index 89f2681..baab26d 100644
Binary files a/docs/chapter2/img/2.39.png and b/docs/chapter2/img/2.39.png differ
diff --git a/docs/chapter2/img/2.54.png b/docs/chapter2/img/2.54.png
index ce6ff06..ba8135b 100644
Binary files a/docs/chapter2/img/2.54.png and b/docs/chapter2/img/2.54.png differ
diff --git a/docs/chapter2/img/2.55.png b/docs/chapter2/img/2.55.png
index 60d0c20..cfbcbe7 100644
Binary files a/docs/chapter2/img/2.55.png and b/docs/chapter2/img/2.55.png differ
diff --git a/docs/chapter2/img/2.56.png b/docs/chapter2/img/2.56.png
index 9711e65..c72a0ce 100644
Binary files a/docs/chapter2/img/2.56.png and b/docs/chapter2/img/2.56.png differ
diff --git a/docs/chapter2/img/2.57.png b/docs/chapter2/img/2.57.png
index fad4ab2..9127088 100644
Binary files a/docs/chapter2/img/2.57.png and b/docs/chapter2/img/2.57.png differ
diff --git a/docs/chapter2/img/2.58.png b/docs/chapter2/img/2.58.png
index 0dd930b..9f265e4 100644
Binary files a/docs/chapter2/img/2.58.png and b/docs/chapter2/img/2.58.png differ
diff --git a/docs/chapter2/img/2.59.png b/docs/chapter2/img/2.59.png
index 7cf6aeb..9a6b53d 100644
Binary files a/docs/chapter2/img/2.59.png and b/docs/chapter2/img/2.59.png differ
diff --git a/docs/chapter2/img/2.60.png b/docs/chapter2/img/2.60.png
index 2b25d01..72bffe8 100644
Binary files a/docs/chapter2/img/2.60.png and b/docs/chapter2/img/2.60.png differ
diff --git a/docs/chapter2/img/2.61.png b/docs/chapter2/img/2.61.png
index 6e1384c..e36091c 100644
Binary files a/docs/chapter2/img/2.61.png and b/docs/chapter2/img/2.61.png differ
diff --git a/docs/chapter2/img/2.62.png b/docs/chapter2/img/2.62.png
index 7464375..4d237e2 100644
Binary files a/docs/chapter2/img/2.62.png and b/docs/chapter2/img/2.62.png differ