Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
Related questions
Question
Let A and B be matrices such that AB exists and is a 4X4 matrix and Ba is a 7X7 matrix. How many rows and columns must A have?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Step 1: Introduce the problem
Let A and B be matrices such that AB exists and is a 4X4 matrix and BA is a 7X7 matrix.
We find the number of rows and columns of matrix A.
Step by step
Solved in 3 steps with 1 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question
Can you explain why exactly it needs 4 rows and 7 columns? And why not the other way around?
Solution
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