यदि \(A={x\in\mathbb{Z}: -4\le x\le4}\) और \(B={x\in\mathbb{Z}: x^2\ge9}\), तो \(A\cap B\) क्या है?
If \(A={x\in\mathbb{Z}: -4\le x\le4}\) and \(B={x\in\mathbb{Z}: x^2\ge9}\), what is \(A\cap B\)?
Explanation opens after your attempt
A. ({-4,-3,3,4})
Concept
(A) contains integers from (-4) to (4). Among them, \(x^2\ge9\) is true only for (-4,-3,3,4).
Why this answer is correct
The correct answer is A. ({-4,-3,3,4}). (A) contains integers from (-4) to (4). Among them, \(x^2\ge9\) is true only for (-4,-3,3,4).
Exam Tip
(A) में (-4) से (4) तक पूर्णांक हैं। इनमें \(x^2\ge9\) केवल (-4,-3,3,4) के लिए सत्य है।
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