Question:

Let A= 1 1/2 1/3 1/4 1/2 1/3 1/4 1/5

Last updated: 7/30/2022

Let A=   1 1/2 1/3 1/4            1/2 1/3 1/4 1/5

Let A= 1 1/2 1/3 1/4 1/2 1/3 1/4 1/5 1/3 1/4 1/5 1/6 1/4 1/5 1/6 1/7 Show that A is invertible and find A-¹. Express A as the product of elementary matrices.