Search Colleges, Courses, Exams, Questions and Articles

Ask a query on 8879100846 Ask Login | Sign Up

 

 
› Tags › Diagonal Matrix

Diagonal Matrix

Follow Ask Question
1

Questions

0

Discussions

1

Active Users

0

Followers

New answer posted

a month ago

Diagonal Matrix Class 12th

The number of all 3 * 3  matrices, A  , with enteries from the set  { - 1,0 , 1 } such that the sum of the diagonal elements of A A ?  is 3 , is(Matrices)
0 Follower 2 Views

R
Raj Pandey

Contributor-Level 9

Let A=[a?]?. tr(AA?)=3.
Σa?² = 3.
Possible cases for non-zero elements are (1,1,1) or (-1,-1,-1) or (1,1,-1) etc.
Total combinations = ?C? * 2³ = 84 * 8 = 672.C? * 2³ = 84 * 8 = 672.

    Get authentic answers from experts, students and alumni that you won't find anywhere else

    Sign Up on Shiksha

    On Shiksha, get access to

    • 65k Colleges
    • 1.2k Exams
    • 688k Reviews
    • 1800k Answers

    Share Your College Life Experience

    Write a Review
    Community GuidelinesUser Points System
    QuestionsDiscussionsTags

    ×
    ×

    This website uses Cookies and related technologies for the site to function correctly and securely, improve & personalise your browsing experience, analyse traffic, and support our marketing efforts and serve the Core Purpose. By continuing to browse the site, you agree to Privacy Policy and Cookie Policy.