All Categories
Alerts
Wishlist
Cart
Sign In
Categories
Current Affairs & GK
Current Affairs
Show All Current Affairs & GK
General Aptitude
Arithmetic Aptitude
Data Interpretation
Show All General Aptitude
General Knowledge
Basic General Knowledge
General Science
Show All General Knowledge
Medical Science
Anatomy
Biochemical Engineering
Biochemistry
Biotechnology
Microbiology
Show All Medical Science
Technical
Database
Digital Electronics
Electronics
Networking
Show All Technical
Verbal and Reasoning
Logical Reasoning
Verbal Ability
Verbal Reasoning
Show All Verbal and Reasoning
›
If A = [[1, 2], [3, 4]], what is the trace of A?
If A = [[1, 2], [3, 4]], what is the trace of A?
Expand All
Collapse All
Practice Questions
1 question
Q1
If A = [[1, 2], [3, 4]], what is the trace of A?
5
7
3
1
Show Solution
Copy
The trace of A is the sum of the diagonal elements: 1 + 4 = 5.
Questions & Step-by-step Solutions
1 item
Q
Q: If A = [[1, 2], [3, 4]], what is the trace of A?
Solution:
The trace of A is the sum of the diagonal elements: 1 + 4 = 5.
Steps: 5
Show Steps
Step 1: Identify the matrix A, which is given as [[1, 2], [3, 4]].
Step 2: Locate the diagonal elements of the matrix. The diagonal elements are the ones from the top left to the bottom right.
Step 3: The diagonal elements in this case are 1 (from the first row and first column) and 4 (from the second row and second column).
Step 4: Add the diagonal elements together: 1 + 4.
Step 5: Calculate the sum, which equals 5.
Related Questions
I
If A = {1, 2, 3} and B = {2, 3, 4}, what is |A ∩ B|?
Question: If A = {1, 2, 3} and B = {2, 3, 4}, what is |A ∩ B|?Options: 1230Correct Answer: 2Solution..
W
What is the sum of the roots of the quadratic equation x^2 - 4x + 3 = 0?
Question: What is the sum of the roots of the quadratic equation x^2 - 4x + 3 = 0?Options: 1234Corre..
I
If A = [[1, 2], [3, 4]] and B = [[5, 6], [7, 8]], what is A + B?
Question: If A = [[1, 2], [3, 4]] and B = [[5, 6], [7, 8]], what is A + B?Options: [6, 8], [10, 12][..
W
What is the value of k if the equation x^2 + kx + 16 = 0 has no real roots?
Question: What is the value of k if the equation x^2 + kx + 16 = 0 has no real roots?Options: -8-448..
F
Find the eigenvalues of the matrix A = [[2, 1], [1, 2]].
Question: Find the eigenvalues of the matrix A = [[2, 1], [1, 2]].Options: 1, 32, 23, 10, 4Correct A..
‹
Biology (School & UG)
Chemistry (School & UG)
Civil Engineering
Commerce & Accountancy
Computer Science & IT
Current Affairs & GK
Data Structures & Algorithms
Electrical & Electronics Engineering
English (School)
General Aptitude
General Knowledge
General Knowledge & Current Affairs
Languages & Literature
Law & Legal Studies
Major Competitive Exams
Mathematics (School)
Mechanical Engineering
Medical Science
Physics (School & Undergraduate)
Quantitative Aptitude & Reasoning
Social Science (School)
Technical
Verbal and Reasoning
Vocational & Skill Development
›
✕
↑
