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What is the domain of (f(x)=\sqrt{x^2+4})?फलन (f(x)=\sqrt{x^2+4}) का डोमेन क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\mathbb{R})(\mathbb{R})
Because (x^2+4>0) for every real (x). In exams if the square root expression is always positive, the domain is (\mathbb{R}).क्योंकि (x^2+4>0) हर वास्तविक (x) के लिए है। परीक्षा में वर्गमूल के अंदर की राशि हमेशा धनात्मक हो तो डोमेन (\mathbb{R}) होता है।
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