Exercise 2.2.4

Answers

Subtract ℓ = c a times equation 1 from equation 2 . The new second pivot multiplying y is d − (cb∕a) or (ad − bc)∕a. Then y = (ag − cf)∕(ad − bc). Notice the "determinant of A′′ = ad − bc. It must be nonzero for this division.

User profile picture
2021-11-20 14:51
Comments