असमानता \(x^2<9\) का संख्या रेखा पर सही interval कौन-सा है?
Which interval is correct on the number line for \(x^2<9\)?
Explanation opens after your attempt
A. ((-3,3))
Concept
\(x^2<9\) means (|x|<3), so (-3<x<3). In exams, endpoints stay open for strict inequalities.
Why this answer is correct
The correct answer is A. ((-3,3)). \(x^2<9\) means (|x|<3), so (-3<x<3). In exams, endpoints stay open for strict inequalities.
Exam Tip
\(x^2<9\) का अर्थ (|x|<3), इसलिए (-3<x<3)। परीक्षा में strict inequality में endpoints खुले रहते हैं।
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