diff --git a/docs/chapter1/img/1.10.png b/docs/chapter1/img/1.10.png
index 92107cf..7f5822b 100644
Binary files a/docs/chapter1/img/1.10.png and b/docs/chapter1/img/1.10.png differ
diff --git a/docs/chapter1/img/1.11.png b/docs/chapter1/img/1.11.png
index fc4b164..9a4d982 100644
Binary files a/docs/chapter1/img/1.11.png and b/docs/chapter1/img/1.11.png differ
diff --git a/docs/chapter1/img/1.12.png b/docs/chapter1/img/1.12.png
index 6eb504c..0d37b9d 100644
Binary files a/docs/chapter1/img/1.12.png and b/docs/chapter1/img/1.12.png differ