Example 22 - Find |a x b|, if a=2i+j+3k and b=3i+5j-2k - Vector product - Defination

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  1. Chapter 10 Class 12 Vector Algebra
  2. Serial order wise
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Example 22 Find | |, if = 2 + + 3 and = 3 + 5 2 = 2 + + 3 = 3 + 5 2 = 2 1 3 3 5 2 = (1 (-2) 5 3) (2 (-2) 3 3) + (2 5 3 1) = ( 2 15) ( 4 9) + (10 3) = ( 17) - ( 4 9) + (10 3) = ( 17) ( 13) + (7) = 17 + 13 + 7 = 17 + 13 + 7 So, Magnitude of = 17 2+ 13 2+ 7 2 = 289+169+49 = 507 Thus, =

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