WBJEE · Maths · Complex Number
The equation \(z \bar{z}+(2-3 i) z+(2+3 i) \bar{z}+4=0\) represents a circle of radius
- A 2 unit
- B 3 unit
- C 4 unit
- D 6 unit
Answer & Solution
Correct Answer
(B) 3 unit
Step-by-step Solution
Detailed explanation
Hint: Centre and radius of \(z \bar{z}+\bar{a} z+a \bar{z}+b=0\) are \(-a\) and \(\sqrt{|a|^{2}-b} \therefore\) radius \(=\sqrt{13-4}=3\)
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