यदि \(U=\mathbb{R}\) और \(A={x:x\in\mathbb{R},x^2=4}\), तो (A') क्या है?
If \(U=\mathbb{R}\) and \(A={x:x\in\mathbb{R},x^2=4}\), what is (A')?
Explanation opens after your attempt
Correct Answer
A. \(\mathbb{R}-{-2,2}\)
Concept
\(x^2=4\) gives (x=-2) or (x=2). Therefore the complement is \(\mathbb{R}-{-2,2}\).
Why this answer is correct
The correct answer is A. \(\mathbb{R}-{-2,2}\). \(x^2=4\) gives (x=-2) or (x=2). Therefore the complement is \(\mathbb{R}-{-2,2}\).
Exam Tip
\(x^2=4\) से (x=-2) या (x=2) मिलता है। इसलिए पूरक \(\mathbb{R}-{-2,2}\) है।
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