add/mod simple, nice numbered examples for left/right inverse

Author: fs446

index.ipynb

@@ -41,9 +41,10 @@
     "## Exercise : Singular Value Decomposition (SVD) / 4 Subspaces of a Matrix\n",
     "- [SVD and 4 Subspaces](exercise04_svd.ipynb)\n",
     " \n",
-    "## Exercise: Left Inverse / Linear Regression with Ordinary Least Squares (OLS)\n",
+    "## Exercise: Left/Right Inverse / Linear Regression with Ordinary Least Squares (OLS)\n",
     "- [SVD and Left Inverse](exercise04_leftinv.ipynb)\n",
     "- [SVD and Left Inverse, Example for WS25/26](left_inverse.ipynb)\n",
+    "- [SVD and Right Inverse, Example for WS25/26](right_inverse.ipynb)\n",
     "\n",
     "## Exercise: SVD Factorization for Multitrack Audio Matrix\n",
     "- [exercise05.ipynb](exercise05.ipynb)\n",