अनुक्रम \(1,6,13,22,\ldots\) का सामान्य पद क्या है?
What is the general term of the sequence \(1,6,13,22,\ldots\)?
Explanation opens after your attempt
A. \(a_n=n^2+2n-2\)
Concept
\(n^2+2n-2\) gives (1,6,13,22). In exams test a quadratic rule on the first four terms.
Why this answer is correct
The correct answer is A. \(a_n=n^2+2n-2\). \(n^2+2n-2\) gives (1,6,13,22). In exams test a quadratic rule on the first four terms.
Exam Tip
\(n^2+2n-2\) से (1,6,13,22) मिलते हैं। परीक्षा में वर्गीय नियम को पहले चार पदों पर जाँचें।
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