ग्राफ \(y=|x^2-1|\) किस अंतराल में \(y=1-x^2\) के बराबर है?
On which interval is the graph \(y=|x^2-1|\) equal to \(y=1-x^2\)?
Explanation opens after your attempt
Correct Answer
A. \(-1\le x\le1\)
Concept
When \(x^2-1\le0\), \(|x^2-1|=1-x^2\), so \(-1\le x\le1\). First determine the sign inside the modulus.
Why this answer is correct
The correct answer is A. \(-1\le x\le1\). When \(x^2-1\le0\), \(|x^2-1|=1-x^2\), so \(-1\le x\le1\). First determine the sign inside the modulus.
Exam Tip
जब \(x^2-1\le0\), तब \(|x^2-1|=1-x^2\), इसलिए \(-1\le x\le1\)। मापांक में अंदर का चिन्ह पहले तय करें।
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