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If A = 5i - 2j and B = -3i + 4j, calculate A · B. (2023)

Practice Questions

1 question
Q1
If A = 5i - 2j and B = -3i + 4j, calculate A · B. (2023)
  1. -23
  2. -7
  3. 7
  4. 23

Questions & Step-by-step Solutions

1 item
Q
Q: If A = 5i - 2j and B = -3i + 4j, calculate A · B. (2023)
Solution: A · B = (5)(-3) + (-2)(4) = -15 - 8 = -23
Steps: 0

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