फलन (f(x)=\sqrt{\frac{x-1}{x-7}}) का डोमेन क्या है?
What is the domain of (f(x)=\sqrt{\frac{x-1}{x-7}})?
Explanation opens after your attempt
Correct Answer
A. ((-\infty,1]\cup\(7,\infty\))
Concept
The expression inside the square root must satisfy \(\frac{x-1}{x-7}\ge0\) and \(x\ne7\). A sign table gives ((-\infty,1]\cup\(7,\infty\)).
Why this answer is correct
The correct answer is A. ((-\infty,1]\cup\(7,\infty\)). The expression inside the square root must satisfy \(\frac{x-1}{x-7}\ge0\) and \(x\ne7\). A sign table gives ((-\infty,1]\cup\(7,\infty\)).
Exam Tip
वर्गमूल के अंदर \(\frac{x-1}{x-7}\ge0\) और \(x\ne7\) चाहिए। संकेत तालिका से ((-\infty,1]\cup\(7,\infty\)) मिलता है।
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