" Q.19.Find least positive integral value of "m" for which "((1+i)/(1-i))^(m)=1

The least positive integral value of n for which ((1+i)/(1-i))^n=1 is

The least positive integral value of n for which ((1-i)/(1+i))^(2n) = 1 is

The least positive integral value of n for which ((1+i)/(1-i))^(n) is real :

Show that the least positive integral value of n for which ((1+i)/(1 -i))^(n) = 1 is 4.

Write the least positive integral value of n for which ((1+i)/(1-i))^(n) is real.

Find the least positive integral value of n, for which ((1-i)/(1+i))^n , where i=sqrt(-1), is purely imaginary with positive imaginary part.

Find the least positive integral value of n, for which ((1-i)/(1+i))^n , where i=sqrt(-1), is purely imaginary with positive imaginary part.

Find the least positive integral value of n, for which ((1-i)/(1+i))^n , where i=sqrt(-1), is purly imaginary with positive imaginary part.

Find the least positive integral value of n, for which ((1-i)/(1+i))^n , where i=sqrt(-1), is purely imaginary with positive imaginary part.