कौन सा फलन हर वास्तविक (x) पर परिभाषित नहीं है?
Which function is not defined for every real (x)?
Explanation opens after your attempt
Correct Answer
C. (f(x)=\sqrt{x-2})
Concept
\(\sqrt{x-2}\) needs \(x-2\ge 0\), so all real (x) are not allowed. In exams check the domain restriction in square root options.
Why this answer is correct
The correct answer is C. (f(x)=\sqrt{x-2}). \(\sqrt{x-2}\) needs \(x-2\ge 0\), so all real (x) are not allowed. In exams check the domain restriction in square root options.
Exam Tip
\(\sqrt{x-2}\) के लिए \(x-2\ge 0\) चाहिए, इसलिए सभी वास्तविक (x) नहीं चलेंगे। परीक्षा में वर्गमूल वाले विकल्प पर domain restriction जांचें।
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