If a = i + j and b = i − j, then a·b equals:
If a = i + j and b = i − j, then a·b equals:
- A. 2
- B. −2
- C. 0
- D. 1
Answer: C) 0
Explanation: 1×1 + 1×(−1) = 0.
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If a = i + j and b = i − j, then a·b equals:
Answer: C) 0
Explanation: 1×1 + 1×(−1) = 0.
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