यदि A=[(a, 0,0),(0,b,0),(0,0,c)] और a,b,c गैर शून्य वास्तविक संख्याएं हैं, तो A^-1 है (ए) 1 /(एबीसी) [(...

If {:A=[(a,0,0),(0,b,0),(0,0,c)]:}," then "A^(-1) , is

If A=[(alpha, 0,0),(0,b,0),(0,0,c)] and a,b,c are non zero real numbers, then A^-1 is (A) 1/(abc) [(1,0,0),(0,1,0),(0,0,1)] (B) 1/(abc) [(a,0,0),(0,b,0),(0,c,0)] (C) 1/(abc) [(a^-1,0,0),(0,b^-1,0),(0,c^-1,1)] (D) [(a^-1,0,0),(0,b^-1,0),(0,c^-1,1)]

If A=[(0,0,0,0),(0,0,0,0),(1,0,0,0),(0,1,0,0)] then (A) A^2=I (B) A^2=0 (C) A^3=0 (D) none of these

If the matrix {:[(a+b,0,0),(0,b+c,0),(0,0,c+a)]:} , (where a,b,c are positive integers) is a scalar matrix, then the value of (a+b+c) can be

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

If A=[(n,0 ,0),( 0,n,0),( 0, 0,n)] and B=[(a_1,a_2,a_3),(b_1,b_2,b_3),(c_1,c_2,c_3)] , then A B is equal to (A) B (B) n B (C) B^n (D) A+B

If A=[[1,0,0],[0,1,0],[a,b,-1]] and A=A^(-1) then a+b=?