Post-UTME Mathematics 2016 Objective — Question 18
Question 18 of 60 from the Post-UTME Screening (Post-UTME) Mathematics 2016 Objective paper, with the correct answer and a full explanation.
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Number Systems 8. (-i)^19 = ?
- A. 1-
- B. 1
- C. 1-
- D. iCorrect
Explanation
i^19 = i^(16+3) = i³ = -i; so (-i)^19 = -(i^19) = -(-i) = i.
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