If and , find the cross product .

Answer and explanation

Correct answer: B.

  1. Step 1: Set up determinant: .
  2. Step 2: Component : .
  3. Step 3: Component : .
  4. Step 4: Component : .
  5. Step 5: Result: .
Answer
(-10, 7, 9).
Why not the others: '' reverses the sign of the cross product (computes ); '' forgets the alternating negative sign for ; '' makes multiplication errors in the subdeterminants.

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