Question 133Asked in BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam)

The principal value of (−1)^(−2i/π) is(−1)^(−2i/π) का प्रिन्सिपल मान है

(−1)^(−2i/π) का प्रिन्सिपल मान है
  1. Ae²ⁱe²ⁱ
  2. Be²e²
  3. Ce⁻²e⁻²
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
Show answerHide answer

Correct answer: (B) e²e²

Explanation

(−1)^w = exp(w · Log(−1)) = exp(w · iπ). With w = −2i/π this is exp((−2i/π)(iπ)) = e².(−1)^w = exp(w · Log(−1)) = exp(w · iπ)। w = −2i/π लेने पर यह exp((−2i/π)(iπ)) = e² है।

From BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam) — Previous Year Paper

This is question 133 of BPSC TRE 2.0 (2023) Mathematics Class 9-10 (Re-exam) — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.