यदि \(A={x\in R:x^2<9}\), तो (A) का अंतराल रूप क्या है?
If \(A={x\in R:x^2<9}\), what is the interval form of (A)?
Explanation opens after your attempt
A. ((-3,3))
Concept
\(x^2<9\) means (-3<x<3).
Why this answer is correct
The endpoints are not included because the inequality is strict. Hence (A=(-3,3)).
Exam Tip
For squared inequalities, find both negative and positive boundaries. चरण 1: \(x^2<9\) का अर्थ है (-3<x<3)। चरण 2: छोर शामिल नहीं हैं क्योंकि असमानता कठोर है। इसलिए (A=(-3,3))। चरण 3: वर्ग वाली असमानता में दोनों ओर की सीमाएँ ध्यान से निकालें।
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