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vardaan kumar Grade: 11
        

IF A={x BELONGS to COMPLEX NO:x2=1}


B={x belongs to complex no :x4=1}, THEN FIND A-B AND B-A.

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear vardan kumar


x2=1


solution for this equation is x= cos2r∏/2 + isin2r∏/2   where r=0,1


                   so x =1 and -1




for x4=1


 


solution for this equation is x= cos2r∏/4 + isin2r∏/4   where r=0,1,2,3


                   so x =1  , cos∏/2 + isin∏/2 ,cos∏ + isin∏ ,cos3∏/2 + isin3∏/2


                       x =1 ,i ,-1,-i


so A-B = Φ


and B-A = i,-i


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Badiuddin



7 years ago
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