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What is the cross product of vectors A = i + 2j and B = 3i + 4j? (2021)

Practice Questions

1 question
Q1
What is the cross product of vectors A = i + 2j and B = 3i + 4j? (2021)
  1. -2k
  2. 2k
  3. k
  4. 0

Questions & Step-by-step Solutions

1 item
Q
Q: What is the cross product of vectors A = i + 2j and B = 3i + 4j? (2021)
Solution: A × B = |i j k| |1 2 0| |3 4 0| = (0 - 0)i - (0 - 0)j + (4 - 6)k = -2k.
Steps: 0

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