please find G^2,G^-2, and G^-k by inspection.

Question

G =[1/5, 0, 0, 0, 1/7, 0, 0, 0, 1

Answer 1

 G^2 = [ 1/25, 0,0.0 , 1/49, 0,0,0, 1/ 81, 000, ..... )

 

 G^-2  = [ 25, 0,0, 0 , 49.0.0.0, 81, 0,.0.0 ...... )