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Ex 3.2, 5 - Compute 3A - 5B if A = [2/3 1 5/3 1/3 2/3 4/3 7/3 - Addition/ subtraction  of matrices

Ex 3.2, 5 - Chapter 3 Class 12 Matrices - Part 2

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Transcript

Ex 3.2, 5 If A = [ 8(2/3&1&5/[email protected]/3&2/3&4/[email protected]/3&2&2/3)] and B = [ 8(2/5&3/5&[email protected]/5&2/5&4/[email protected]/5&6/5&2/5)] ,then compute 3A 5B 3A 5B = 3 [ 8(2/3&1&5/[email protected]/3&2/3&4/[email protected]/3&2&2/3)] - 5 [ 8(2/5&3/5&[email protected]/5&2/5&4/[email protected]/5&6/5&2/5)] = [ 8(2/3 3&1 3&5/3 [email protected]/3 3&2/3 3&4/3 [email protected]/3 3&2 3&2/3 3)] [ 8(2/5 5&3/5 5&1 [email protected]/5 5&2/5 5&4/5 [email protected]/5 5&6/5 5&2/5 5 )] = [ 8(2&3&[email protected]&2&[email protected]&6&2)] [ 8(2&3&[email protected]&2&[email protected]&6&2)] = [ 8(2 2&3 3&5 [email protected] 1&2 2&4 [email protected] 7&6 6&2 2)] = [ 8(0&0&[email protected]&0&[email protected]&0&0)] Hence, 3A 5B = [ 8(0&0&[email protected]&0&[email protected]&0&0)]

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.