[" 12.If the number "((1-i)^(n))/((1+i)^(n-2))" is real and positing "],[" then "n" is "]

The number ((1+i)^(n))/((1-i)^(n-2)) is equal to

If (1-i)^(2n)/((1+i)^(2n+1)) is real number then

If the number (1-i)^n/(1+i)^(n-2) is real and positive then n is (a) Any Integer (b) Any odd Integer (c) Any even Integer (d) None of these

The expression (1+i)^(n_1)+(1+i^(3))^(n_(2)) is real iff

The least positive integer n, for which ((1+i)^(n))/((1-i)^(n-2)) is positive is

Find the smallest positive integer n for which ((1+iota)^(n))/((1-iota)^(n-2)) is a positive real number.

If n is a positive integer,then (1+i)^(n)+(1-1)^(n) is equal to

What is the modulus of the complex number i^(2n+1) (-i)^(2n-1) , where n in N and i=sqrt(-1) ?