1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

If $$\left(\frac{1+i}{1-i}\right)^x=1$$, then

A
$$x=4 n+1, n \in N$$
B
$$x=2 n+1, n \in N$$
C
$$x=2 n, n \in N$$
D
$$x=4 n, n \in N$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

If $$z=x+i y$$, then the equation $$|z+1|=|z-1|$$ represents

A
a circle
B
a parabola
C
$$X$$-axis
D
$$Y$$-axis
3
KCET 2018
MCQ (Single Correct Answer)
+1
-0
If $\left(\frac{1-i}{1+i}\right)^{96}=a+i b$, then $(a, b)$ is
A
$(1,1)$
B
$(0,1)$
C
$(1,0)$
D
$(0,-1)$
4
KCET 2017
MCQ (Single Correct Answer)
+1
-0
If $\left(\frac{1+i}{1-i}\right)^m=1$, then the least positive integral value of $m$ is
A
2
B
4
C
3
D
1
KCET Subjects
EXAM MAP