1.

(i) If 'a' is a complex number such that |a| = 1. Find the values of a, so that equation az^2 + z+1=0 has one purely imaginary root. (ii) Show that ((pi+1)/(pi-1))^(m) e^(2mi cot^(-1) (p))=1.

Answer»


ANSWER :`COS^(-1) ((sqrt5-1)/(2))`


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