समुच्चय \({x\in\mathbb{R}:x\le -2}\) का अंतराल रूप कौन सा है?
Which interval form represents \({x\in\mathbb{R}:x\le -2}\)?
Explanation opens after your attempt
A. (\(-\infty,-2]\)
Concept
The inequality \(x\le -2\) includes (-2) and all smaller real values. Infinity always uses an open parenthesis.
Why this answer is correct
The correct answer is A. (\(-\infty,-2]\). The inequality \(x\le -2\) includes (-2) and all smaller real values. Infinity always uses an open parenthesis.
Exam Tip
\(x\le -2\) में (-2) शामिल है और सभी छोटे वास्तविक मान आते हैं। \(\infty\) के साथ हमेशा खुला कोष्ठक लगता है।
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