If A`=[{:(a, b), (c, d):}] " then " A^(-1)` = ____.

If matrix A=[(a,b),(c,d)] , then |A|^(-1) is equal to

If A= [[a,b],[c,d]] is invertible,then A^(-1)

If A=[(a,b),(c,d)],I=[(1,0),(0,1)] then A^(2)-(a+d)A=

If A=[(a , b),( c, d)] , B=[(1 ,0),( 0, 1)] , find a d j\ (A B) .

If A=((a, b), (c, d)) and I=((1, 0), (0, 1)) show that A^(2)-(a+d)A=(bc-ad)I_(2).

If P=(a,b,c,d) and Q=(1,2,3,4,5) then n(PxxQ) =________

If A^(20) = [(a,b),(c,d)] where A =[(1,1),(0,2)] then a+b+c+d is equal to

If A={:[(a,b),(c,d)] and I={:[(1,0),(0,1)] Show that, A^(2)-(a+d)A=(bc-ad)I .

If sqrt(3)+i=(a+i b)(c+i d) then tan ^(-1) (b/a)+tan ^(-1) (d/c)=

If ({:((1)/(2), -(3)/(5)),((4)/(6), -(1)/(7)):}) = ({:(-a, b), (c, -d):})({:(1, 0), (0, 1):}) then find a, b,c and d.