यदि (f(x)=\sqrt{x+4}+\sqrt{4-x}), तो (f) का परिसर क्या है?
If (f(x)=\sqrt{x+4}+\sqrt{4-x}), what is the range of (f)?
Explanation opens after your attempt
Correct Answer
A. \( [2\sqrt{2},4] \)
Concept
At the endpoints the value is \(2\sqrt{2}\), and at (x=0) the maximum is (4). For symmetric radical functions, also check the midpoint.
Why this answer is correct
The correct answer is A. \( [2\sqrt{2},4] \). At the endpoints the value is \(2\sqrt{2}\), and at (x=0) the maximum is (4). For symmetric radical functions, also check the midpoint.
Exam Tip
सिरों पर मान \(2\sqrt{2}\) और (x=0) पर अधिकतम (4) है। सममिति वाले वर्गमूल फलनों में मध्य बिंदु भी जांचें।
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