अनुक्रम \(3,13,27,45,\ldots\) का सामान्य पद क्या है?
What is the general term of the sequence \(3,13,27,45,\ldots\)?
Explanation opens after your attempt
A. \(a_n=2n^2+4n-3\)
Concept
\(2n^2+4n-3\) gives (3,13,27,45). In exams test options with small values of (n).
Why this answer is correct
The correct answer is A. \(a_n=2n^2+4n-3\). \(2n^2+4n-3\) gives (3,13,27,45). In exams test options with small values of (n).
Exam Tip
\(2n^2+4n-3\) से (3,13,27,45) मिलते हैं। परीक्षा में विकल्पों को छोटे (n) मानों से जाँचें।
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