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Grade: 11
        
The condition for the cube of a+ib to be a real number is
  • (i) a=0 or a=+/- Root 3b 
  • (ii) a=0 or b=+/- Root 3a
  • (iii) b=0 or b=+/- Root 3a
  • (iv) b=0 or a=+/- Root 3b
5 months ago

Answers : (1)

Deepak Kumar Shringi
askIITians Faculty
3060 Points
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4 months ago
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