Stewart XXXXXXXXXXproposed a single number ρ to represent a Givens transformation in XXXXXXXXXXShow how to reproduce a and b from ρ. Using the Sherman–Morrison–Woodbury formula (5.9.4), fill in the...

Stewart (1976) proposed a single number ρ to represent a Givens transformation in (5.7.1). Show how to reproduce a and b from ρ.

Using the Sherman–Morrison–Woodbury formula (5.9.4), fill in the details of the proof of (5.9.3), including the details of (5.9.5).