यदि किसी समान्तर श्रेणी का \(S_n=3n^2-2n\) है तो उसका सार्व अंतर क्या होगा?
If \(S_n=3n^2-2n\) for an arithmetic progression, what is its common difference?
Explanation opens after your attempt
B. (6)
Concept
\(a_1=S_1=1\) and \(a_2=S_2-S_1=7\), so (d=6). Exam tip: start with \(S_1\) and \(S_2-S_1\).
Why this answer is correct
The correct answer is B. (6). \(a_1=S_1=1\) and \(a_2=S_2-S_1=7\), so (d=6). Exam tip: start with \(S_1\) and \(S_2-S_1\).
Exam Tip
\(a_1=S_1=1\) और \(a_2=S_2-S_1=7\) इसलिए (d=6)। परीक्षा में \(S_1\) और \(S_2-S_1\) से शुरू करें।
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