If x+i y = (a+i b) , then -x-i y is equal to

Mathematics · JEE Main · NTA Exams — Complex Numbers and Quadratic Equations

1. \(\pm(\mathrm{b}+\mathrm{ia})\)
2. \(\pm(a-i b)\)
3. \((\mathrm{ai}+\mathrm{b})\)
4. \(\pm(\mathrm{b}-\mathrm{ia})\)

Answer

(D) ( b - ia )

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