Ex 3.2, 5 - Chapter 3 Class 12 Matrices (Term 1)
Last updated at May 29, 2018 by Teachoo
Transcript
Ex 3.2, 5 If A = [ 8(2/3&1&5/3@1/3&2/3&4/3@7/3&2&2/3)] and B = [ 8(2/5&3/5&1@1/5&2/5&4/5@7/5&6/5&2/5)] ,then compute 3A 5B 3A 5B = 3 [ 8(2/3&1&5/3@1/3&2/3&4/3@7/3&2&2/3)] - 5 [ 8(2/5&3/5&1@1/5&2/5&4/5@7/5&6/5&2/5)] = [ 8(2/3 3&1 3&5/3 3@1/3 3&2/3 3&4/3 3@7/3 3&2 3&2/3 3)] [ 8(2/5 5&3/5 5&1 5@1/5 5&2/5 5&4/5 5@7/5 5&6/5 5&2/5 5 )] = [ 8(2&3&5@1&2&4@7&6&2)] [ 8(2&3&5@1&2&4@7&6&2)] = [ 8(2 2&3 3&5 5@1 1&2 2&4 4@7 7&6 6&2 2)] = [ 8(0&0&0@0&0&0@0&0&0)] Hence, 3A 5B = [ 8(0&0&0@0&0&0@0&0&0)]
Ex 3.2
Ex 3.2, 1
Ex 3.2, 2 (i)
Ex 3.2, 2 (ii) Important
Ex 3.2, 2 (iii)
Ex 3.2, 2 (iv)
Ex 3.2, 3 (i)
Ex 3.2, 3 (ii) Important
Ex 3.2, 3 (iii)
Ex 3.2, 3 (iv) Important
Ex 3.2, 3 (v)
Ex 3.2, 3 (vi) Important
Ex 3.2, 4
Ex 3.2, 5 You are here
Ex 3.2, 6
Ex 3.2, 7 (i)
Ex 3.2, 7 (ii) Important
Ex 3.2, 8
Ex 3.2, 9
Ex 3.2, 10
Ex 3.2, 11
Ex 3.2, 12 Important
Ex 3.2, 13 Important
Ex 3.2, 14
Ex 3.2, 15
Ex 3.2, 16 Important
Ex 3.2, 17 Important
Ex 3.2, 18
Ex 3.2, 19 Important
Ex 3.2, 20 Important
Ex 3.2, 21 (MCQ) Important
Ex 3.2, 22 (MCQ) Important
Chapter 3 Class 12 Matrices (Term 1)
Serial order wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.