lem #7: A matrix 4 is called self-inverse if A = A. Which of the following statements are always true? O If A and B are both self-inverse n × n matrices then A+B is also self-inverse. (11) If A and B are both self-inverse 80 × 80 matrices, then the matrix AB is also self-inverse. (111) If A is self-inverse then -4 is also self-inverse where k is any nonzero constant. (A) (1) only (B) all of them (C) (1) and (i1) only (D) (ii) and (iii) only (E) none of them (F) (11) only (G) (iii) only (H) (i) and (iii) only

lem #7: A matrix 4 is called self-inverse if A = A. Which of the following statements are always true? O If A and B are both self-inverse n × n matrices then A+B is also self-inverse. (11) If A and B are both self-inverse 80 × 80 matrices, then the matrix AB is also self-inverse. (111) If A is self-inverse then -4 is also self-inverse where k is any nonzero constant. (A) (1) only (B) all of them (C) (1) and (i1) only (D) (ii) and (iii) only (E) none of them (F) (11) only (G) (iii) only (H) (i) and (iii) only

College Algebra

1st Edition

ISBN:9781938168383

Author:Jay Abramson

Publisher:Jay Abramson

Chapter7: Systems Of Equations And Inequalities

Section7.7: Solving Systems With Inverses

Problem 1SE: In a previous section, we showed that matrix multiplication is not commutative, that is, ABBA in...

See similar textbooks