यदि \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\frac{3x-2}{5}), तो (f) के बारे में सही उत्तर क्या है?
If \(f:\mathbb{R}\to\mathbb{R}\), (f(x)=\frac{3x-2}{5}), what is the correct answer about (f)?
Correct answer and explanation
A. एकैकी हैIt is one-one
Concept
(f(a)=f(b)) लिखें। / Write (f(a)=f(b)).
Why this answer is correct
\(\frac{3a-2}{5}=\frac{3b-2}{5}\) से (3a-2=3b-2) और (a=b)। / From \(\frac{3a-2}{5}=\frac{3b-2}{5}\), we get (3a-2=3b-2), so (a=b).
Exam Tip
भिन्न में लिखा रैखिक फलन भी एकैकी होता है यदि (x) का गुणांक शून्य नहीं हो। / A linear function written as a fraction is also one-one if the coefficient of (x) is non-zero.
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