BITSAT 2011 Paper

Section: Mathematics

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Question : 87 of 150

Marks: +1, -0

If a > 0, a ∊ R, z = a + 2i and z | z | – az + 1 = 0 then

z is always a positive real number
z is always a negative real number
z is purely imaginary number
such a complex z does not exist

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