If ` A = [ [ 1 , -2 ] , [ 5 , 3 ] ]` then `A + A^(T)` is equal to

If A=[[1,-2],[5,3]] , then A+A^(-1) equals

If A=[[-1,5],[-3,2]] , then A^(-1) equals

If A=[(5a, -b),(3,2)] and A adj A=A A^T, then 5a+b is equal to: (A) -1 (B) 5 (C) 4 (D) 13

If A =[(1,2),(3,4)] then A^(2)-5A equals

If A is a 3 xx 3 non-singular matrix such that A A^(T) = A^(T)A " and "B = A^(-1)A^(T), " then "B B^(T) is equal to

If a :(b+c)=1:3 a n d c :(a+b)=5:7, t h e b :(a+c) is equal to 1:2 b. 1:3 c. 2:3 d. 2:1