फलन (f(x)=x-2-2|x|) के ग्राफ का न्यूनतम मान क्या है?

What is the minimum value of the graph of (f(x)=x-2-2|x|)?

Explanation opens after your attempt
Correct Answer

A. (-1)

Step 1

Concept

Let \(t=|x|\ge0\), then (f=t-2-2t=(t-1)2-1). In exams, use (|x|) as a new variable to find the minimum.

Step 2

Why this answer is correct

The correct answer is A. (-1). Let \(t=|x|\ge0\), then (f=t-2-2t=(t-1)2-1). In exams, use (|x|) as a new variable to find the minimum.

Step 3

Exam Tip

मान लें \(t=|x|\ge0\) तब (f=t-2-2t=(t-1)2-1) है। परीक्षा में (|x|) को नए चर की तरह लेकर न्यूनतम निकालें।

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Mathematics Answer, Explanation and Revision Hints

फलन (f(x)=x-2-2|x|) के ग्राफ का न्यूनतम मान क्या है? / What is the minimum value of the graph of (f(x)=x-2-2|x|)?

Correct Answer: A. (-1). Explanation: मान लें \(t=|x|\ge0\) तब (f=t-2-2t=(t-1)2-1) है। परीक्षा में (|x|) को नए चर की तरह लेकर न्यूनतम निकालें। / Let \(t=|x|\ge0\), then (f=t-2-2t=(t-1)2-1). In exams, use (|x|) as a new variable to find the minimum.

Which concept should I revise for this Mathematics MCQ?

Let \(t=|x|\ge0\), then (f=t-2-2t=(t-1)2-1). In exams, use (|x|) as a new variable to find the minimum.

What exam hint can help solve this Mathematics question?

मान लें \(t=|x|\ge0\) तब (f=t-2-2t=(t-1)2-1) है। परीक्षा में (|x|) को नए चर की तरह लेकर न्यूनतम निकालें।