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  1. Chapter 10 Class 12 Vector Algebra
  2. Serial order wise

Transcript

Example 26 (Supplementary NCERT) Find .( ), if = 2 + + 3 , = + 2 + , = 3 + + 2 Given, = 2 + + 3 , = + 2 + , = 3 + + 2 .( ) = [ " " " " ] = | 8(2&1&3@ 1&2&1@3&1&2)| = 2[(2 2) (1 1) ] 1[( 1 2) (3 1) ] + 3[( 1 1) (3 2)] = 2 [4 1] 1( 2 3)+3[ 1 6] = 2(3) 1( 5) + 3( 7) = 6 + 5 21 = 11 21 = 19 .( ) = 19

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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.