WBJEE · Maths · Complex Number
If \(z=\frac{4}{1-i}\), then \(\bar{z}\) is (where \(\bar{z}\) is complex conjugate of \(z\) )
- A \(2(1+i)\)
- B \((1+i)\)
- C \(\frac{2}{1-\mathrm{i}}\)
- D \(\frac{4}{1+\mathrm{i}}\)
Answer & Solution
Correct Answer
(D) \(\frac{4}{1+\mathrm{i}}\)
Step-by-step Solution
Detailed explanation
Hints: \(z=\frac{4}{1-i}\) \[ \overline{\mathrm{z}}=\frac{4}{1+\mathrm{i}} \]
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