Corrected typo

sdrangan · Feb 12, 2019 · d9a8aa9 · d9a8aa9
1 parent 8456f2e
commit d9a8aa9
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/unit05_lasso/lasso_in_class.ipynb b/unit05_lasso/lasso_in_class.ipynb
@@ -112,8 +112,8 @@
     "To fit the sinusoidal model, we will write a function to map the values `t` to \n",
     "the `sin` and `cos` features.  Finish the function `transform` that creates matrices:\n",
     "\n",
-    "    Xcos[i,j] = np.cos(2*np.pi*cos(2*np.pi*t[i]*freq[j])\n",
-    "    Xsin[i,j] = np.cos(2*np.pi*sin(2*np.pi*t[i]*freq[j])\n",
+    "    Xcos[i,j] = np.cos(2*np.pi*t[i]*freq[j])\n",
+    "    Xsin[i,j] = np.sin(2*np.pi*t[i]*freq[j])\n",
     "    X = np.hstack((Xcos,Xsin))\n",
     "    \n",
     "So, if `freq` is length `d`, there will `2*d` features.  You can try to create the matrices using python broadcasting if you want to avoid a for loop.    "