Complex Numbers 1 Question 2
2. All the points in the set lie on a
(2019 Main, 9 April I)
(a) circle whose radius is
(b) straight line whose slope is -1 .
(c) circle whose radius is 1.
(d) straight line whose slope is 1 .
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Answer:
Correct Answer: 2. (c)
Solution:
- Let
On comparing real and imaginary parts, we get
Which is an equation of circle with centre
So,