Upload 4_David.pdf

.gitattributes

@@ -62,3 +62,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 1_David.pdf filter=lfs diff=lfs merge=lfs -text
 2_David.pdf filter=lfs diff=lfs merge=lfs -text
 3_David.pdf filter=lfs diff=lfs merge=lfs -text
+4_David.pdf filter=lfs diff=lfs merge=lfs -text

4_David.pdf

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e56065248b1e5f663cb98ec89b0d273eca58acda311685a072c41ea8cdfc1863
+size 1270611