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MHT CET2012MathematicsVector Algebra

i ( j k )+ j ( k i )+ k ( j i ) is equal to

Options

  1. A3
  2. B2
  3. C1
  4. D0

Correct answer

C. 1

Step-by-step solution

Given, aligned i ( j k ) &+ j ( k i )+ k ( j i ) =& i ( i )+ j ( j )+ k (- k ) =&( i i )+( j j )-( k k ) =& 1+1-1=1 aligned

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