यदि (f(x)=7-4x) और डोमेन ([1,5)) है, तो रेंज क्या होगी?
If (f(x)=7-4x) and the domain is ([1,5)), what is the range?
Explanation opens after your attempt
A. ((-13,3])
Concept
The function is decreasing; at (x=1) it gives (3), and as \(x\to5\) it approaches (-13), not included. In exams the range order reverses for a decreasing function.
Why this answer is correct
The correct answer is A. ((-13,3]). The function is decreasing; at (x=1) it gives (3), and as \(x\to5\) it approaches (-13), not included. In exams the range order reverses for a decreasing function.
Exam Tip
फलन घटता है, (x=1) पर (3) और \(x\to5\) पर (-13) मिलता है पर शामिल नहीं होता। परीक्षा में decreasing function में range का क्रम उलट जाता है।
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