Question

if A= (-1,1) so find A³​

Answer 1

4A.

solutions.

A³ = A×A×A

[ 1 -1, -1 1]

A×A = [ 1 -1, -1 1] × [ 1 -1, -1 1 ] = [ 1+1. -1-1, -1-1. 1+1]

= [ 2 -2, -2. 2]

= 2x [ 1 -1, -1 1] = 2A

A³ =. A×A×A = 2A×A = (A×A) = 2x (2A) = 4A

answers. 4A.