diff --git a/limit_curve3.png b/limit_curve3.png
new file mode 100644
index 0000000..e27165e
Binary files /dev/null and b/limit_curve3.png differ
diff --git a/limit_curve4.png b/limit_curve4.png
new file mode 100644
index 0000000..64cee1a
Binary files /dev/null and b/limit_curve4.png differ