अनुक्रम \(a_n=n^2-3n+2\) समांतर श्रेणी है या नहीं?
Is the sequence \(a_n=n^2-3n+2\) an AP?
Explanation opens after your attempt
Correct Answer
C. नहीं, \(a_{n+1}-a_n=2n-2\) स्थिर नहीं हैNo, \(a_{n+1}-a_n=2n-2\) is not constant
Concept
Here the difference depends on (n), so it is not constant. In exams, a quadratic \(a_n\) usually does not form an AP.
Why this answer is correct
The correct answer is C. नहीं, \(a_{n+1}-a_n=2n-2\) स्थिर नहीं है / No, \(a_{n+1}-a_n=2n-2\) is not constant. Here the difference depends on (n), so it is not constant. In exams, a quadratic \(a_n\) usually does not form an AP.
Exam Tip
यहां अंतर (n) पर निर्भर करता है, इसलिए स्थिर नहीं है। परीक्षा में द्विघात \(a_n\) सामान्यतः समांतर श्रेणी नहीं देता।
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