फलन (f(x)=3+\frac{1}{x-2+2x+2}) का परिसर क्या है?
What is the range of (f(x)=3+\frac{1}{x-2+2x+2})?
Explanation opens after your attempt
A. ( (3,4] )
Concept
The denominator (x-2+2x+2=(x+1)2+1\ge 1). So (\frac{1}{x-2+2x+2}\in(0,1]), hence the range is ((3,4]).
Why this answer is correct
The correct answer is A. ( (3,4] ). The denominator (x-2+2x+2=(x+1)2+1\ge 1). So (\frac{1}{x-2+2x+2}\in(0,1]), hence the range is ((3,4]).
Exam Tip
हर (x-2+2x+2=(x+1)2+1\ge 1) है। इसलिए (\frac{1}{x-2+2x+2}\in(0,1]), अतः परिसर ((3,4]) है।
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