फलन (f(x)=\frac{x-2+2x+5}{x-2+2x+2}) का परिसर क्या है?
What is the range of (f(x)=\frac{x-2+2x+5}{x-2+2x+2})?
Explanation opens after your attempt
A. ( (1,4] )
Concept
Put (t=(x+1)2\ge 0), then \(f=\frac{t+4}{t+1}=1+\frac{3}{t+1}\). Hence the values are greater than (1) and up to (4).
Why this answer is correct
The correct answer is A. ( (1,4] ). Put (t=(x+1)2\ge 0), then \(f=\frac{t+4}{t+1}=1+\frac{3}{t+1}\). Hence the values are greater than (1) and up to (4).
Exam Tip
मान (t=(x+1)2\ge 0) रखें, तो \(f=\frac{t+4}{t+1}=1+\frac{3}{t+1}\)। इसलिए मान (1) से बड़े और (4) तक हैं।
Login to save your score, XP, coins and progress.
