कौन सा कथन फलन (f(x)=\sqrt{x-2+25}) के लिए सही है?
Which statement is correct for (f(x)=\sqrt{x-2+25})?
Explanation opens after your attempt
A. डोमेन \(\mathbb{R}\) और रेंज \([5,\infty\))Domain \(\mathbb{R}\) and range \([5,\infty\))
Concept
Since \(x^2+25\ge25\), (f(x)\ge5) and every real (x) is allowed. In exams first check the minimum value inside.
Why this answer is correct
The correct answer is A. डोमेन \(\mathbb{R}\) और रेंज \([5,\infty\)) / Domain \(\mathbb{R}\) and range \([5,\infty\)). Since \(x^2+25\ge25\), (f(x)\ge5) and every real (x) is allowed. In exams first check the minimum value inside.
Exam Tip
क्योंकि \(x^2+25\ge25\), इसलिए (f(x)\ge5) और हर वास्तविक (x) स्वीकार्य है। परीक्षा में पहले अंदर की न्यूनतम वैल्यू देखें।
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