# HG changeset patch
# User Jeff Hammel <k0scist@gmail.com>
# Date 1504558944 25200
# Node ID 433c475f42dba305c2371905d604f92ce656d24c
# Parent  37a9fb876f543ac462fcce8409fdf95f2a3b1041
[documentation] more matrix notes

diff -r 37a9fb876f54 -r 433c475f42db docs/matrix.txt
--- a/docs/matrix.txt	Mon Sep 04 13:55:48 2017 -0700
+++ b/docs/matrix.txt	Mon Sep 04 14:02:24 2017 -0700
@@ -1,3 +1,14 @@
     [|  |     | ]
 X = [x1 x2 ...xm]
     [|  |     | ]
+
+Z1 = w'X + b1
+
+A1 = sigmoid(Z1)
+
+     [---]
+W1 = [---]
+     [---]
+
+`W1x1` gives some column vector, where `x1`
+is the first training example.