Consider B given in Exercise 3.20. What happens with the von Neumann series (3.6.3), and does this conflict with Exercise 3.19? (You do not need to prove Exercise 3.19.)  Using (3.7.1), show that the...

Consider B given in Exercise 3.20. What happens with the von Neumann series (3.6.3), and does this conflict with Exercise 3.19? (You do not need to prove Exercise 3.19.)

 Using (3.7.1), show that the inverse of a matrix is a continuous function of its elements.