Jee Mains 2018 practice problem -3

Algebra Level 3

Let A be any 3 × 3 3×3 invertible matrix. Then which one of the following is not always true ?

1. a d j ( a d j ( A ) ) = ∣ A ∣ ⋅ ( a d j ( A ) ) − 1 adj (adj(A))=|A|⋅(adj(A))^{-1}

2. a d j ( a d j ( A ) ) = ∣ A ∣ 2 ⋅ ( a d j ( A ) ) − 1 adj (adj(A))=|A|^{2}⋅(adj(A))^{-1}

3. a d j ( A ) = ∣ A ∣ ⋅ A − 1 adj (A)=|A|⋅A^{-1}

4. a d j ( A ) = ∣ A ∣ ⋅ A adj (A)=|A|⋅A

2 1 4 3

Shivam Jadhav by Shivam Jadhav , 22, India

This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try refreshing the page, (b) enabling javascript if it is disabled on your browser and, finally, (c) loading the non-javascript version of this page . We're sorry about the hassle.

0 solutions

No explanations have been posted yet. Check back later!

0 pending reports

×

Problem Loading...

Note Loading...

Set Loading...