0 votes 0 votes how we can solve such type of question? pream sagar asked Oct 27, 2018 pream sagar 217 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.
2 votes 2 votes HINT: $e^{it} = cos(\pi t) + isin(\pi t)$. It should be trivial after this. goxul answered Oct 27, 2018 goxul comment Share Follow See all 0 reply Please log in or register to add a comment.