If `A=" diag "(3" "-2" "5)" and "B=" diag "(1" "3" "-4)," find "(A+B).`

If A = diag (1,-1,2) and B = diag (2,3,-1) find 3A+4B .

If A=" diag "(1,-1,2)"B = diag "(2,3,-1) then 3A+4B=

If A=diag(1-1quad 2) and B=diag(2quad 3quad -1), find A+B,3A+4B

Let A=" diag "[3,-5,7]" and "B=" diag "[-1,2,4]. ltbr. Find (i) (A+B) (ii) (A-B) (iii) -5A (iv) (2A+3B).

If A= diag (3, 2, 1) then det A is equal to

If A = diag. [3,-5,7]^* and B - diag. [-1,2,4], then find (2A + 3B).

if A= diag [1" "3" "4],B="diag"[-2" "1" "-1],C="Diag"[3" "-1" "-2] then find 2A +B-C.

If A="diag "[2,-5,9],B="diag "[-3,7,14]" and "C="diag "[4,-6,3] , find: (i) A+2B1 (ii) B+C-A (iii) 2A+B-5C.

If A = diag (4, 2, 1) then det A is equal to