Gate Exam

The number of roots of equations z15 = 1 and Iarg zI< π/2 is

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Gate Other Question

show that line perpendicular to x-axis and a line perpendecular to y-axis having slope multipication -1 Let α, β and γ be the cube roots of p (p < 0). For any real numbers x, y and z, the value of (xα+yβ+zγ) ⁄(xβ+yγ+zα) is