Which of the following is/are incor...
Question
Check here step-by-step solution of 'Which of the following is/are incorrect?' question at Instasolv!
Fullscreen

Which of the following is/are incorrect?
(A) Adjoint of a symmetric matrix is skew symmetric matrix.
(B) Adjoint of a diagonal matrix is a diagonal matrix.
( (mathrm{C}) mathrm{A}(mathrm{Adj} mathrm{A})=(mathrm{Ad} mathrm{i} mathrm{A}) mathrm{A}=1 mathrm{AII} )
(D) Adjoint of a unit matrix is a diagonal matrix

JEE/Engineering Exams
Maths
Solution
95
Rating
4.0 (1 ratings)
Which of the following is/are incorrect?
Fullscreen

Properties

A (ad, A) = |A| Jn = (ad,A)A
( operatorname{lod}_{2} A_{1}=|A|^{n-1} )
( quad ) ads ( ^{circ} ) Cad ( g(A)=quad|A|^{n-2} ) o ( A )
( quadleft|operatorname{adg}left(a d_{3} Aright)right|=|A|^{(n-1)^{2}} )
( quad operatorname{adg}left(A^{top}right)=(dot{O} d g A)^{top} )
( quad ) odg ( (k A)=k^{n-1} )
( operatorname{adg}(0)=0 )
A is symmetoic Mathx ( Rightarrow ) adj A is also symmetric
A is diagomal Natain ( Rightarrow ) adj ( A ) is also diagonal
A is trianguar mabix ( Rightarrow ) adja is as Thangular

Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free