फलन (f(x)=|x-2|-|x+2|) का परिसर क्या है?
What is the range of (f(x)=|x-2|-|x+2|)?
Explanation opens after your attempt
A. ( [-4,4] )
Concept
The difference of distances from (2) and (-2) stays between (-4) and (4). Removing signs interval-wise is the safe method.
Why this answer is correct
The correct answer is A. ( [-4,4] ). The difference of distances from (2) and (-2) stays between (-4) and (4). Removing signs interval-wise is the safe method.
Exam Tip
बिंदुओं (2) और (-2) से दूरी के अंतर का मान (-4) से (4) तक रहता है। अंतरालों पर चिह्न हटाकर जांचना सुरक्षित तरीका है।
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