Home › Bihar Board Class 12 (Commerce) › Mathematics › Matrices › Which square matrix has 1 on the main diagonal a…
Which square matrix has 1 on the main diagonal and 0 everywhere else?
ASkew symmetric
BRow matrix
CNull matrix
DIdentity matrix
Answer & Solution
Correct answer: D. Identity matrix
Ones along the diagonal and zeros elsewhere describe the identity matrix In.
Related questions
For the matrix with rows (1, 2) and (3, 4), A(adj A) equals which matrix?Which pair names the two ways of solving AX = B using matrices?For the method of inversion to solve three equations, what must be true of the coefficientBy the method of inversion, the solution of AX = B is?Three linear equations in x, y and z are written as AX = B. What are the orders of A, X anWhich rows form the coefficient matrix for 2x + 3y = 5 and x - 4y = 9?In the matrix equation AX = B for a system of equations, what does X hold?To find A inverse by elementary steps, what is done to A?