यदि \(a_1=1\), \(a_2=3\) और \(a_n=3a_{n-1}-a_{n-2}+n\) है तो \(a_4\) क्या होगा?
If \(a_1=1\), \(a_2=3\), and \(a_n=3a_{n-1}-a_{n-2}+n\), what is \(a_4\)?
Explanation opens after your attempt
B. (34)
Concept
\(a_3=11\) and \(a_4=34\). Exam tip: do not forget to add the current (n) in a two-term rule.
Why this answer is correct
The correct answer is B. (34). \(a_3=11\) and \(a_4=34\). Exam tip: do not forget to add the current (n) in a two-term rule.
Exam Tip
\(a_3=11\) और \(a_4=34\) है। दो-पद नियम में वर्तमान (n) भी जोड़ना न भूलें।
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