यदि (f(x)=\frac{3x}{x+2}), तो इस फलन का परास कौन-सा है?
If (f(x)=\frac{3x}{x+2}), what is the range of this function?
Explanation opens after your attempt
A. (R-{3})
Concept
Write \(y=\frac{3x}{x+2}\).
Why this answer is correct
From (y(x+2)=3x), we get \(x=\frac{-2y}{y-3}\), if \(y\ne3\).
Exam Tip
Hence every real (y) is possible except (3). चरण 1: \(y=\frac{3x}{x+2}\) लिखें। चरण 2: (y(x+2)=3x) से \(x=\frac{-2y}{y-3}\), यदि \(y\ne3\)। चरण 3: इसलिए हर वास्तविक (y) संभव है, केवल (3) नहीं।
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