फलन (f(x)=6-\sqrt{x+2}) की रेंज क्या है?
What is the range of (f(x)=6-\sqrt{x+2})?
Explanation opens after your attempt
A. (\(-\infty,6]\)
Concept
\(\sqrt{x+2}\ge0\), so \(6-\sqrt{x+2}\le6\) and can decrease without bound. In exams a negative sign changes the direction of the range.
Why this answer is correct
The correct answer is A. (\(-\infty,6]\). \(\sqrt{x+2}\ge0\), so \(6-\sqrt{x+2}\le6\) and can decrease without bound. In exams a negative sign changes the direction of the range.
Exam Tip
\(\sqrt{x+2}\ge0\), इसलिए \(6-\sqrt{x+2}\le6\) और नीचे अनंत तक जा सकता है। परीक्षा में negative sign रेंज की दिशा बदलता है।
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