# If and are two square matrices, find A B and hence solve the system of linear equations: X – y = 3, 2x + 3y + 4z = 17, y + 2z = 7.

A = B =

AB =

AB =

Now, we can see that it is AB = 6I. where I is the unit Matrix

Or, A – 1 =

Now the given equation can be written as:

A X B

Or, X = A – 1B

=

=

X =

Hence, x = 2,y = – 1 and z = 4

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Irodov Special - Electrostatics | Strengthen Your Basics29 mins
Types of solution on the basis of Raoult's Law44 mins
Irodov Special - Electrostatics | Strengthen Your Basics (Part 2)23 mins
Buffer solution - Learn through Interactive Quiz55 mins
Lets get back to world of Buffer solution41 mins
Functional Equations - JEE with ease48 mins
Buffer solution still confuses you? Watch this session44 mins
Meselson and Stahl experiment49 mins
Microsporogenesis & Megasporogenesis49 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses