फलन (f(x)=9-3|x+1|) की रेंज क्या है?
What is the range of (f(x)=9-3|x+1|)?
Explanation opens after your attempt
A. (\(-\infty,9]\)
Concept
Since \(|x+1|\ge0\), \(9-3|x+1|\le9\) and can go down without bound. In exams a negative coefficient changes the range direction.
Why this answer is correct
The correct answer is A. (\(-\infty,9]\). Since \(|x+1|\ge0\), \(9-3|x+1|\le9\) and can go down without bound. In exams a negative coefficient changes the range direction.
Exam Tip
क्योंकि \(|x+1|\ge0\), इसलिए \(9-3|x+1|\le9\) और नीचे अनंत तक जा सकता है। परीक्षा में negative coefficient से range की दिशा बदलती है।
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