2.7 Ex 3c. Obtain 16-digit decimal expansions of the exact solutions. (i) 2 pts, (ii) 2 pts ,(numerical) 1pt
2.7 Ex 4c with just 1 step. [3pts]
2.7 Ex X. [3pts] Validate the Sherman-Morrison formula for the update of the inverse of a matrix after rank-1 change. Hint: Just multiply the formula on (A+uv^T) and look for a product of matrices/vectors that's actually 1x1 so it could be brought out to the front as a scalar multiplier.
2.7 CP 1c. [code, 4pts, and comparison 1 pt] Compare results with those of by-hand Exercises.
2.7 CP 5c. Compare results with those of by-hand Exercises.