यदि \(E_1={x:x\in \mathbb{Z}, x^2+4=4}\) है, तो \(E_1\) कैसा है?
If \(E_1={x:x\in \mathbb{Z}, x^2+4=4}\), what type of set is \(E_1\)?
Explanation opens after your attempt
B. एकलSingleton
Concept
\(x^2+4=4\) gives \(x^2=0\).
Why this answer is correct
Its only integer solution is (x=0).
Exam Tip
For \(x^2=0\), there are not two different positive and negative roots. चरण 1: \(x^2+4=4\) से \(x^2=0\) मिलता है। चरण 2: इसका एकमात्र पूर्णांक हल (x=0) है। चरण 3: \(x^2=0\) में धनात्मक और ऋणात्मक दो अलग हल नहीं होते।
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