Maths-
General
Easy

Question

The vector stack x with minus on top which is perpendicular to (2,-3,1) and (1,-2,3) and which satisfies the condition stack x with minus on top times open parentheses stack i with minus on top plus 2 stack j with minus on top minus 7 k close parentheses equals 10

  1. 3 i with minus on top plus 5 j with minus on top plus k with minus on top    
  2. 7 i with minus on top plus 5 j with minus on top plus k with minus on top    
  3. 3 stack i with minus on top minus 5 stack j with minus on top plus stack k with minus on top    
  4. 7 i with minus on top plus 5 j with minus on top plus k with minus on top    

The correct answer is: 7 i with minus on top plus 5 j with minus on top plus k with minus on top


    stack x with minus on top equals x stack i with minus on top plus y stack j with minus on top plus z stack k with minus on top text  and  end text stack x with minus on top times left parenthesis stack i with minus on top plus 2 stack j with minus on top minus 7 stack k with minus on top right parenthesis equals 10

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