1.

All three roots of az^3+bz^3+cz+d=0 , z being complex number. Further , assume that the origin, z_1 and z_2 form an equilateral triangle, then :

Answer»

All a,B,C,d have the same SIGN
a,b,c have same sign
a,b,d have same sign
b,c,d have same sign

ANSWER :C


Discussion

No Comment Found

Related InterviewSolutions