यदि \(a_1=2\), \(a_2=5\) और \(a_n=2a_{n-1}+a_{n-2}+n^2\) है तो \(a_4\) क्या होगा?

If \(a_1=2\), \(a_2=5\), and \(a_n=2a_{n-1}+a_{n-2}+n^2\), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published: Updated:
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Correct Answer

A. (63)

Step 1

Concept

\(a_3=21\) and \(a_4=63\). Exam tip: after applying coefficients, also add \(n^2\).

Step 2

Why this answer is correct

The correct answer is A. (63). \(a_3=21\) and \(a_4=63\). Exam tip: after applying coefficients, also add \(n^2\).

Step 3

Exam Tip

\(a_3=21\) और \(a_4=63\) है। गुणांक लगाने के बाद \(n^2\) भी जोड़ें।

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FAQs

Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=2\), \(a_2=5\) और \(a_n=2a_{n-1}+a_{n-2}+n^2\) है तो \(a_4\) क्या होगा? / If \(a_1=2\), \(a_2=5\), and \(a_n=2a_{n-1}+a_{n-2}+n^2\), what is \(a_4\)?

Correct Answer: A. (63). Explanation: \(a_3=21\) और \(a_4=63\) है। गुणांक लगाने के बाद \(n^2\) भी जोड़ें। / \(a_3=21\) and \(a_4=63\). Exam tip: after applying coefficients, also add \(n^2\).

Which concept should I revise for this Mathematics MCQ?

\(a_3=21\) and \(a_4=63\). Exam tip: after applying coefficients, also add \(n^2\).

What exam hint can help solve this Mathematics question?

\(a_3=21\) और \(a_4=63\) है। गुणांक लगाने के बाद \(n^2\) भी जोड़ें।