यदि \(A={x\in\mathbb{R}: x^2<9}\) और \(B={x\in\mathbb{R}: x\ge 1}\), तो (A-B) क्या है?
If \(A={x\in\mathbb{R}: x^2<9}\) and \(B={x\in\mathbb{R}: x\ge 1}\), what is (A-B)?
Explanation opens after your attempt
A. ((-3,1))
Concept
(A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).
Why this answer is correct
The correct answer is A. ((-3,1)). (A=(-3,3)), and (B) contains (1) and all greater real numbers. Therefore (A-B=(-3,1)).
Exam Tip
(A=(-3,3)) है और (B) में (1) तथा उससे बड़े सभी वास्तविक संख्याएं हैं। इसलिए (A-B=(-3,1)) है।
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