Supplementary Example 1 - Find a.(b x c), (a x b).c, Is - Supplementary examples and questions from CBSE

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

Transcript

Supplementary Example 1 If = 2 3 + 4 , = + 2 3 , = 3 + 4 , then find .( ) & ( ). . Is .( ) = ( ). ? Given, = 2 3 + 4 , = + 2 3 , = 3 + 4 .( ) = = 2 3 4 1 2 3 3 4 1 = 2 2 1 (4 3) ( 3) 1 1 (3 3) + 4 1 4 (3 2) = 2 2+12 +3 1+9 +4 4 6 = 2(10) + 3 (8) + 4( 2) = 20 + 24 8 = 36 Finding ( ). = .( ) = = 3 4 1 2 3 4 1 2 3 = 3 3 3 (2 4) 4 2 3 (1 4) + ( 1) 2 2 (1 3) = 3 9 8 4 6 4 4+3 = 3(1) 4( 10) 7 = 3 + 40 7 = 36 Hence , .( ) = ( ).

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