more notebooks added

Author: nfmcclure

01_Introduction/03_Using_Variables_and_Placeholders/03_placeholders.ipynb

@@ -83,10 +83,10 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "[[ 0.00858334  0.16610153  0.41885602  0.88935864]\n",
-      " [ 0.2866537   0.00368538  0.07969997  0.37126487]\n",
-      " [ 0.35291323  0.33622122  0.04039102  0.70073986]\n",
-      " [ 0.76789761  0.40810189  0.29742569  0.03206369]]\n"
+      "[[ 0.46375921  0.31559455  0.86665654  0.12972654]\n",
+      " [ 0.9077422   0.49321386  0.01816663  0.2000093 ]\n",
+      " [ 0.52083462  0.52363396  0.05546777  0.98415035]\n",
+      " [ 0.53048414  0.93917197  0.05808467  0.14067334]]\n"
      ]
     }
    ],
@@ -97,11 +97,8 @@
     "# Create a Tensor to perform an operation (here, y will be equal to x, a 4x4 matrix)\n",
     "y = tf.identity(x)\n",
     "\n",
-    "# Perform operation\n",
-    "output = tf.mul(x, y)\n",
-    "\n",
     "# Print the output, feeding the value of x into the computational graph\n",
-    "print(sess.run(output, feed_dict={x: rand_array}))"
+    "print(sess.run(y, feed_dict={x: rand_array}))"
    ]
   },
   {