# Ex 3.2, 9 - Chapter 3 Class 12 Matrices (Term 1)

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Ex 3.2,9 Find x and y, if 2[ 8(1&3@0& )] + [ 8( &0@1&2)] = [ 8(5&6@1&8)] Given that 2[ 8(1&3@0& )] + [ 8( &0@1&2)] = [ 8(5&6@1&8)] [ 8(1 2&3 2@0 2& 2)] + [ 8( &0@1&2)] = [ 8(5&6@1&8)] [ 8(2&6@0&2 )] + [ 8( &0@1&2)] = [ 8(5&6@1&8)] [ 8(2+ &6+0@0+1&2 +2)] = [ 8(5&6@1&8)] [ 8(2+ &6@1&2 +2)] = [ 8(5&6@1&8)] Since matrices are equal. Corresponding elements are equal Therefore, 2 + y = 5 2x + 2 = 8 Solving (1) 2 + y = 5 y = 5 2 y = 3 Solving (2) 2x + 2 = 8 2x = 8 2 2x = 6 x = 6/2 = 3 Hence x = 3 & y = 3

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

Ex 3.2, 6

Ex 3.2, 7 (i)

Ex 3.2, 7 (ii) Important

Ex 3.2, 8

Ex 3.2, 9 You are here

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)

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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.