अनुक्रम \(5,11,21,35,\ldots\) के लिए सही स्पष्ट नियम कौन-सा है?
Which explicit rule is correct for the sequence \(5,11,21,35,\ldots\)?
Explanation opens after your attempt
C. \(a_n=2n^2+3\)
Concept
\(2n^2+3\) gives (5,11,21,35). In exams, test options by putting (n=1,2,3).
Why this answer is correct
The correct answer is C. \(a_n=2n^2+3\). \(2n^2+3\) gives (5,11,21,35). In exams, test options by putting (n=1,2,3).
Exam Tip
\(2n^2+3\) से (5,11,21,35) मिलते हैं। परीक्षा में (n=1,2,3) रखकर विकल्प जाँचें।
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