फलन (f(x)=\sqrt{x-1}+\sqrt{x+2}) का प्रांत क्या है?
What is the domain of (f(x)=\sqrt{x-1}+\sqrt{x+2})?
Explanation opens after your attempt
Correct Answer
A. \( [1,\infty\) )
Concept
Both square roots need \(x\ge 1\) and \(x\ge -2\). The stricter combined condition is \(x\ge 1\).
Why this answer is correct
The correct answer is A. \( [1,\infty\) ). Both square roots need \(x\ge 1\) and \(x\ge -2\). The stricter combined condition is \(x\ge 1\).
Exam Tip
दोनों वर्गमूलों के लिए \(x\ge 1\) और \(x\ge -2\) चाहिए। संयुक्त शर्त अधिक कठोर \(x\ge 1\) है।
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