यदि (f(x)=\frac{2x}{x-1}), तो इस फलन का परास कौन-सा है?

If (f(x)=\frac{2x}{x-1}), what is the range of this function?

Explanation opens after your attempt
Correct Answer

A. (R-{2})

Step 1

Concept

Write \(y=\frac{2x}{x-1}\).

Step 2

Why this answer is correct

From (y(x-1)=2x), we get \(x=\frac{y}{y-2}\), if \(y\ne2\).

Step 3

Exam Tip

Hence every real (y) is possible except (2). चरण 1: \(y=\frac{2x}{x-1}\) लिखें। चरण 2: (y(x-1)=2x) से \(x=\frac{y}{y-2}\), यदि \(y\ne2\)। चरण 3: इसलिए हर वास्तविक (y) संभव है, केवल (2) नहीं।

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Mathematics Answer, Explanation and Revision Hints

यदि (f(x)=\frac{2x}{x-1}), तो इस फलन का परास कौन-सा है? / If (f(x)=\frac{2x}{x-1}), what is the range of this function?

Correct Answer: A. (R-{2}). Explanation: चरण 1: \(y=\frac{2x}{x-1}\) लिखें। चरण 2: (y(x-1)=2x) से \(x=\frac{y}{y-2}\), यदि \(y\ne2\)। चरण 3: इसलिए हर वास्तविक (y) संभव है, केवल (2) नहीं। / Step 1: Write \(y=\frac{2x}{x-1}\). Step 2: From (y(x-1)=2x), we get \(x=\frac{y}{y-2}\), if \(y\ne2\). Step 3: Hence every real (y) is possible except (2).

Which concept should I revise for this Mathematics MCQ?

Write \(y=\frac{2x}{x-1}\).

What exam hint can help solve this Mathematics question?

Hence every real (y) is possible except (2). चरण 1: \(y=\frac{2x}{x-1}\) लिखें। चरण 2: (y(x-1)=2x) से \(x=\frac{y}{y-2}\), यदि \(y\ne2\)। चरण 3: इसलिए हर वास्तविक (y) संभव है, केवल (2) नहीं।