फलन (f(x)=\sqrt{2x-x-2}) का प्रांत क्या है?
What is the domain of (f(x)=\sqrt{2x-x-2})?
Explanation opens after your attempt
Correct Answer
A. ([0,2])
Concept
The condition \(2x-x^2\ge 0\) gives (x(2-x)\ge 0). Hence \(x\in[0,2]\).
Why this answer is correct
The correct answer is A. ([0,2]). The condition \(2x-x^2\ge 0\) gives (x(2-x)\ge 0). Hence \(x\in[0,2]\).
Exam Tip
शर्त \(2x-x^2\ge 0\) से (x(2-x)\ge 0) मिलता है। इसलिए \(x\in[0,2]\)।
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