If A=1 −5 70 7 911 8 9, then trace of matrix A, is

If $A = [\begin{array}{rrr} 1 - 5 7 \\ 0 7 9 \\ 11 8 9 \end{array}]$ , then trace of matrix $A,$ is

Solution:

We know that, if $A = [a_{i j}]$ is a square matrix of order $n x n,$ then

$tr (A) = \sum_{i = 1}^{n} a_{i i}$

$∴ A = [\begin{array}{rrr} 1 - 5 7 \\ 0 7 9 \\ 11 8 9 \end{array}] \Rightarrow tr (A) = 1 + 7 + 9 = 17$

Related content

Technical Courses After 12th – Eligibility, Duration, Salary, Top Colleges

Sikkim NEET UG Merit List 2023

How to Start Preparing for NEET From Class 10?

UP NEET UG Merit List 2023

Sound Waves Mind Map for JEE, NEET and CBSE

Does Infinity Learn Institute Prepare You for JEE, NEET?

Top 5 Reasons To Study Science After Class 10th

Application for Teaching Job

Railway Jobs After 10th

CBSE Class 12 Computer Science Answer Key and Paper Analysis 2024 – Student Feedback and Expert View