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 is equal to 

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ISRO Scientist ECE 2013 Official Paper
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  1. (cos x)1/3 – j(sinx)1/3

Answer (Detailed Solution Below)

Option 3 :
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Detailed Solution

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Concept:

ejx = cosx + jsinx

and e-jx = cosx - jsinx

Calculation:

Given  

= (cosx – jsinx)1/3

= (e-jx)1/3

 

Expanding the above now,

 

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Latest ISRO Scientist EC Updates

Last updated on Apr 11, 2023

The official notification of the ISRO Scientist EC 2025 is expected to be out soon! The previous official ISRO Scientist Notification for Electronics was released by the Indian Space Research Centre (ISRO) on 29th November 2022 for a total of 21 vacancies. Applicants applying for the exam should have a B.E./B.Tech or equivalent degree in Electronics & Communication Engineering to be eligible for the recruitment process. Candidates can also refer to the ISRO Scientist EC Previous Year Papers to understand the type of questions asked in the exam and increase their chances of selection.

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