# Derive the formula for y (the optimum value of element vrs given at the end of Section 9.4.4….

Derive the formula for y (the optimum value of element vrs given at the end of Section 9.4.4. Normalize the matrix M of our running example by: (a) First subtracting from each element the average of its row, and then subtracting from each element the average of its (modified) column. (b) First subtracting from each element the average of its column, and then subtracting from each element the average of its (modified) row. Are there any differences in the results of (a) and (b)?