फलन (f(x)=\sqrt{12-3x}) का डोमेन क्या है?
What is the domain of (f(x)=\sqrt{12-3x})?
Explanation opens after your attempt
A. (\(-\infty,4]\)
Concept
The square root needs \(12-3x\ge 0\), giving \(x\le 4\). In exams dividing by a negative coefficient reverses the inequality.
Why this answer is correct
The correct answer is A. (\(-\infty,4]\). The square root needs \(12-3x\ge 0\), giving \(x\le 4\). In exams dividing by a negative coefficient reverses the inequality.
Exam Tip
वर्गमूल के लिए \(12-3x\ge 0\) से \(x\le 4\) मिलता है। परीक्षा में ऋणात्मक गुणांक से भाग देने पर असमानता उलटती है।
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