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MHT CET202016 Oct 2020Evening ShiftMathematicsVector AlgebraActual

For any non - zero vectors a and b , [ array lll b & a b & a array ]=

Options

  1. A| a b |
  2. B| a b |²
  3. C0
  4. Da b

Correct answer

B. | a b |²

Step-by-step solution

(B) [ array lll b & a b & a array ]= b [( a b ) a ]=- b [ array l a ( a b ) array ]=- b [( a b ) a -( a a ) b ]=0

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