Example 7 - Find 2A - B if A = [1 2 3 2 3 1], B = [3 -1 3 - Addition/ subtraction  of matrices

  1. Chapter 3 Class 12 Matrices
  2. Serial order wise
Ask Download

Transcript

Example 7 If A = [ 8(1&2&3@2&3&1)] and B = [ 8(3& 1&3@ 1&0&2)] then find 2A B. Finding 2A 2A = 2 [ 8(1&2&3@2&3&1)] = [ 8(2 1&2 2&2 3@2 2&2 3&2 1)] = [ 8(2&4&6@4&6&2)] Now, finding 2A B 2A B = [ 8(2&4&6@4&6&2)] [ 8(3& 1&3@ 1&0&2)] = [ 8(2 3&4 ( 1)&6 3@4 ( 1)&6 0&2 2)] = [ 8( 1&4+1&3@4+1&6&0)]

About the Author

Davneet Singh's photo - Teacher, Computer Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.